Five ways to improve your health this year that don’t rely on losing weight

Source: The Conversation – UK – By Rachel Woods, Senior Lecturer in Physiology, University of Lincoln

PeopleImages/Shutterstock

Every January, internet searches for the terms “diet” and “weight loss” surge, gyms become busier and diet trends spread across social media. But research shows that most people who try the latest quick-fix plan do not keep the weight off.

Focusing on weight alone can overshadow other changes that improve health in more reliable and sustainable ways. Some of these may lead to weight loss and some may not, but the benefits are clear either way.

Here are five evidence-based resolutions that can support better health – and none are about losing weight.

1. Eat more plants

Eating more plants does not mean you have to become vegetarian. If you eat meat and want to continue, that is fine. You can still increase the amount and variety of plant foods on your plate.




Read more:
The 30-plants-a-week challenge: you’ll still see gut health benefits even if you don’t meet this goal


There is a vast amount of research showing that diets rich in plant foods are linked with lower risks of major diseases. A meta-analysis of more than 2.2 million adults found that consistently sticking to a plant-based dietary pattern was associated with significantly lower risks of type 2 diabetes, cardiovascular disease, cancer and all-cause mortality (the risk of dying from any cause).

Although that study focused on people limiting or avoiding meat, other research has shown that even among omnivores, each additional 200 g of fruits and vegetables per day is linked with reduced risk of coronary heart disease, cardiovascular disease, cancer, stroke and premature mortality (dying earlier than expected for someone of your age).

Adding more plants is one of the simplest ways to improve your diet. This includes fruit and vegetables, but also grains, nuts, seeds, herbs, spices and pulses.

2. Exercise

If exercise were a pill, it would be prescribed to everyone. It is one of the most effective things you can do for your health.

Although exercise is often discussed in the context of weight loss, it is not as effective for losing weight as many people assume. Its real value lies in helping to maintain a healthy body weight and supporting overall health.




Read more:
The exercise paradox: why workouts aren’t great for weight loss but useful for maintaining a healthy body weight


Research has shown that exercise alone improves several important health markers. It can raise levels of HDL cholesterol, often called “good cholesterol”, because higher levels help protect against heart disease. It also lowers triglycerides, a type of fat in the blood that increases cardiovascular risk when elevated.

Exercise helps the body regulate blood glucose more effectively, and it reduces arterial stiffness, meaning the arteries stay more flexible and less prone to the strain that increases the risk of heart disease and stroke. It can also reduce liver fat, which lowers the likelihood of developing non-alcoholic fatty liver disease. All of these improvements can happen even when a person’s weight stays the same.

More broadly, exercise has been shown to improve fitness, quality of life, sleep and symptoms of depression. These benefits arise because physical activity boosts blood flow to the brain, releases mood-supporting chemicals such as endorphins and helps regulate circadian rhythms – the internal 24-hour cycles that guide sleep, wakefulness, hormone release and other essential functions.

The best type of exercise is the one you enjoy, because you are more likely to stick to it. The benefits come from consistency. Building movement into everyday routines, such as taking the stairs, walking part of your commute or cycling the school run, can be as effective as structured workouts. This also means you do not need an expensive gym membership that might be abandoned by the end of January.

These approaches are not possible for everyone, so finding something that fits your circumstances is important. If you are new to exercise, easing in and building up gradually helps reduce the risk of injury and gives your body time to adapt.

3. Stress

This one is easier said than done, since stress is not usually something we choose. But it can have wide-ranging effects on the body. Long-term stress can weaken the immune system, raise blood pressure and cholesterol and disrupt sleep.

It can also change how we eat. Research suggests that around 40% of people eat more when stressed, another 40% eat less and about 20% do not change how much they eat.

Regardless of direction, the types of foods chosen often shift towards more pleasurable options higher in fat and sugar. Stress has also been linked with eating fewer fruits and vegetables.

Looking at what is driving your stress and seeing whether any part of it can be eased or managed differently can have meaningful effects on health.

4. Sleep

Sleep has a major impact on health. Not getting enough is linked with a range of physical and mental health conditions, including high blood pressure, heart disease, dementia and depression.

Adults are usually advised to get around seven hours a night, although this varies from person to person.

Sleep also influences diet. Lack of sleep has been linked with increased appetite and food intake. It also tends to increase preferences for high-energy foods such as sweets and fast food, partly because sleep deprivation disrupts hormones that regulate hunger and craving.




Read more:
Gut microbes may have links with sleep deprivation


This advice can feel frustrating for people dealing with insomnia or caring responsibilities. But making a realistic plan to improve sleep, where possible, may be a new year resolution that pays off over time.

5. Alcohol

Alcohol is linked with long-term risks such as cancer, heart disease and liver disease. But even in the short term, it can disrupt sleep because alcohol changes sleep stages and reduces the amount of restorative deep sleep. Alcohol can also influence appetite and food choices by lowering inhibitions and making high-calorie foods seem more appealing.

NHS guidance advises people not to drink more than 14 units a week on a regular basis (equivalent to six pints of average-strength beer or 10 small glasses of lower-strength wine) and to have several “drink free days” per week. This guideline is intended to keep the risk of alcohol-related illness low, but research shows there is no completely safe level of drinking.

Enjoying a drink now and then is a personal choice. But reducing how much you drink is an evidence-based way to improve health.

Many new year resolutions focus on weight, yet long-term health is shaped by a much wider set of habits. Small, realistic steps can add up to meaningful improvements in health throughout the year.

The Conversation

Rachel Woods does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Five ways to improve your health this year that don’t rely on losing weight – https://theconversation.com/five-ways-to-improve-your-health-this-year-that-dont-rely-on-losing-weight-269587

What colour should I repaint my home? Ask a psychologist

Source: The Conversation – UK – By Geoff Beattie, Professor of Psychology, Edge Hill University

I knew there would be an argument. The room had gone eerily quiet. “Isn’t it about time,” my partner began, “that we freshened this place up a little?”

There was a long pause as she glanced around the white walls of our kitchen – which, I’ll admit, do have a little bit of paint chipping off them. Then she dropped a glossy magazine on the table – World of Interiors, I think. I was trying not to look.

My partner is passionate about colours and knows the names of all the different shades. I don’t – but I am a psychologist, and that gives me some skin in this colour game too.

Let’s start with those myriad names. Clay pink, muted teal, warm taupe … psychologists have long argued that the extent of your colour vocabulary affects how good you are at colour recognition. My partner spots subtle differences that I never notice. Recently, it’s been all about katsuobushi smoke, halva sesame and black garlic amber.

Colours exert their influence through a combination of evolutionary predispositions, physiological responses, learned associations and broader cultural meanings. Because of this, I’d argue that choosing a new colour scheme is a psychological issue, not just an aesthetic one.

Indeed, a growing body of neuroscientific, behavioural and psychological research shows that colour is not merely a matter of taste. The hues that surround us influence our emotional states, cognitive performance, social interactions, sleep – and even our long-term psychological wellbeing.

In other words, the colours of our walls might be shaping our lives in ways we rarely consider.

Strong or subtle?

Let’s start with a fundamental question: what does psychology say about whether to go strong or subtle in your paint choices?

Neutral colours (whites, greys, beiges) are low in visual stimulation, which helps reduce sensory overload and stress. They enhance perceived spaciousness, and can have positive effects on cognitive performance in both children and adults. But their psychological impact hinges on shade and context. Cold greys or stark whites may evoke sterility or sadness, particularly in poorly lit spaces.

Recently, there has been a general trend away from white towards using brighter colours in our homes. The hot colours for 2026 apparently include chocolate brown and burgundy – while Ikea’s colour of the year is Rebel Pink: “A vibrant, playful shade chosen to inspire joy, energy and self-expression.”

A pink wall with white side table.
Rebel pink, anyone?
Shutterstock

However, the psychological evidence says choose low- to mid-saturation shades rather than hyper-bright colours for your long-term comfort. Blue and muted green are associated with enhanced creativity and improved problem-solving. A muted green home office or study may make you more innovative without you really noticing why.

Green, with its obvious nature connection, is also linked to restoration and reduced mental fatigue, supporting the broader findings of environmental psychology on biophilic design.

You should probably reserve warm, energising colours for social or active areas in the house. Soft yellow feels cheerful, presumably due to its association with sunlight – but high-saturation yellows may increase agitation.

And then there’s red. In evolutionary terms, bright red wavelengths tend to increase physiological arousal, raising heart rate and galvanic skin response. It can also affect desire – one study found men perceived women as “more attractive” and “more sexually desirable” when their photos were presented on a red rather than white background.

But red is also associated with danger and warning. Children did less well in problem-solving tasks when their exam number was written in red rather than green or black, or if the cover of the test booklet was red. Even just seeing the word “red” can negatively affect intellectual performance.

So think carefully before using red in your home office. A red-accented study might feel “dynamic” initially, but it could backfire when you start on tasks requiring calm focus and clear thinking. In contrast, painting an office blue seems to have a calming effect. It is associated with sky and water, and seems to be connected to improved concentration.

The 60-30-10 rule

In truth, my partner didn’t seem all that keen to take the advice of a psychologist – well, this one, anyway – about the house’s impending makeover. “Haven’t you heard of the 60-30-10 rule?” she sniffed.

The experts of interior design suggest 60% of a room should be devoted to the dominant colour (the majority of the walls plus a key piece of furniture like a sofa, say), 30% for the secondary colour to add visual interest (perhaps including curtains or carpet), and 10% to an “accent colour”. The roots of these proportions have been said to lie in visual psychology and mathematics’ “golden ratio” – although some recent studies suggest the association of this precise mathematical formula with our perceptions of beauty is something of a myth.

Nonetheless, I propose this scheme for our living room: soft sage green (dominant), warm cream (secondary), plus brushed gold as the accent colour (maybe as cushions).

My reasoning? Sage green reduces stress, improves relaxation and mimics the cognitive benefits of being in nature. Cream warms the palette, encouraging a cosy rather than “forest hermit” vibe. Finally, accent colours draw attention, and gold can have a powerful symbolic and emotional impact because of its cultural associations with wealth, success and achievement. It subconsciously signals confidence and positivity (in moderation, of course – Donald Trump famously loves excessive gold decoration).

Now I’m just waiting to see which colour paints my partner returns with.

The Conversation

Geoff Beattie does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. What colour should I repaint my home? Ask a psychologist – https://theconversation.com/what-colour-should-i-repaint-my-home-ask-a-psychologist-271787

US air strikes in northern Nigeria: possible windfalls, as well as dangers

Source: The Conversation – Africa (2) – By Olayinka Ajala, Associate professor in Politics and International Relations, Leeds Beckett University

A month before the US carried out its Christmas day attack on militants linked to the Islamic State group (IS) in north-western Nigeria, president Donald Trump had declared Nigeria a “country of particular concern”. This was due to the alleged killing of Christians by terrorist groups in the country. Trump threatened military intervention if the attacks against Christians continued.

The threat became a reality on Christmas day when the US military’s Africa Command – in coordination with the Nigerian authorities – carried out strikes on terrorist locations in Sokoto state, North-West Nigeria.

There were mixed reactions to the attacks. Some citizens hailed the attacks, saying they hoped they would send a message to the terrorists to desist from their activities. Others condemned the strikes, citing concerns about sovereignty.

I have been researching conflicts, terrorism and the formation of insurgent groups in Nigeria and the Sahel for over a decade. After the US intervention, a key question that arises is: does the attack strengthen Nigeria’s counter-terrorism mechanisms. Or will it weaken them, and threaten national security and sovereignty?

I argue that the US military intervention will indeed strengthen the hand of the Nigerian government in fighting insurgency in the short term in four ways, including enhanced intelligence gathering. Nevertheless, there’s also a risk that it will trigger unintended consequences if Nigeria doesn’t fully take charge of its counter-terrorism initiatives. These include loss of sovereignty and internal political division.

Immediate gains

First, the recent cooperation between the US and Nigerian military would help Nigeria with enhanced surveillance and intelligence gathering. Prior to the Christmas day bombing, the US has been conducting reconnaissance flights in Nigeria. The data gathered from these flights helped identify terrorist gatherings and movements.

The US and its allies have struggled to gather intelligence in the region since closing down a US drone base in Niger following a coup in the country. The loss and subsequent withdrawal from the US drone base in Agadez has significantly degraded US and Western intelligence-gathering capabilities. This is why the US flew reconnaissance flights from Ghana for this attack.




Read more:
US military is leaving Niger even less secure: why it didn’t succeed in combating terrorism


Second, the reported military collaboration will give the Nigerian government access to state of the art military hardware and resources. The US and Nigeria’s relationship has been fractured since 2015 following the release of an Amnesty International report in which the Nigerian military was accused of gross human rights abuses.

The US government immediately suspended sales of key military hardware to Abuja. It also banned Nigeria from using some US equipment already purchased.

Six years later Nigeria signed a military agreement with Russia.

The Christmas Day strike ordered by Trump suggests that the US might once again be willing to help Nigeria in its counter-terrorism initiatives.

Third, the intervention could help Nigeria fight terrorism along its borders. The Christmas day attack is based on intelligence that terrorist cells from Niger and Burkina Faso had entered Nigeria to carry out coordinated attacks. I have previously written about how terrorism is spreading in West Africa and how international cooperation is needed to fight the surge. Such coordinated attacks could help Nigeria’s cross-border counter-terrorism initiatives.

Finally, the coordinated attacks send a message to terrorist groups that there is a renewed effort to turn the heat on them.

Unintended consequences

There is nevertheless a risk of the US action having unintended consequences if Nigeria does not fully take charge of its counter-terrorism initiatives.

Since 2009 when Boko Haram surfaced in Nigeria, the country has been battling terrorism within and around its borders. Despite counter-terrorism initiatives such as military response, intelligence coordination, community resilience, international partnerships, and rehabilitation efforts to dismantle extremist networks and address root causes, Nigeria has not been able to stop terrorism in the country.

While renewed collaborations with the US is a step in the right direction, the possible dangers for Nigeria include:

  • A loss of access and control of intelligence data. Nigeria needs to take charge of its surveillance architecture and intelligence gathering or risk a weakening of its sovereignty. Large quantities of data is collected during reconnaissance flights. But the country running the flights owns the data. It has the prerogative of what it wants to share, and when.

Nigeria has been here before: when the US drone base in Agadez was operational, all the data gathered across the Sahel was analysed by the Pentagon which decided what information to relay to its partners.

Nigeria should guard against this by taking charge of the reconnaissance and surveillance activities relevant to protect its national interest.

  • Swift follow-up action. The Nigerian military needs to take advantage of the impact of the strikes. It needs to capitalise on the disarray in terrorist camps. By acting in a coordinated way after 2015, the Multinational Joint Task Force (MNJTF) was very successful in dismantling Boko Haram as an organisation and weakening its bases.

But the Nigerian military needs to keep a close eye on the terror group splintering as a result of success against its military bases. The Multinational Joint Task Force’s successes was partly responsible for Boko Haram breaking into three factions in 2016.

The initial strikes conducted by the US military will only be significant if the Nigerian army prevents smaller terror groups from being formed.

  • Nigerians need to be assured the government will act in their interests. The US attack risks worsening political divisions in Nigeria if not properly managed. While Trump framed the attack as an action against the murder of Christians in the country, the Nigerian government has insisted it was part of a renewed campaign against terrorists destabilising the country.

Trump’s explanation of the attack has angered some political groups in Nigeria. For instance, Islamic cleric Sheikh Ahmed Gumi vehemently condemned the US airstrikes calling Nigerians who supported the strikes ‘stupid’ and ‘misguided’.

The Nigerian government must control the narrative and clearly explain how the renewed military collaboration with the US is in Nigeria’s national interest, and not targeted at particular ethnic or religious groups.

The Conversation

Olayinka Ajala does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. US air strikes in northern Nigeria: possible windfalls, as well as dangers – https://theconversation.com/us-air-strikes-in-northern-nigeria-possible-windfalls-as-well-as-dangers-272630

Kenya’s ‘night running’: how a rural ritual with links to witchcraft became an urban staple

Source: The Conversation – Africa – By Maureen Amimo, Lecturer, Maasai Mara University

In parts of Kenya, Uganda and Tanzania, it is not uncommon to hear of individuals who run naked at night. They cause trouble and instil fear in the neighbourhood. They throw stones on rooftops, make animal noises, bang on windows and doors, and chase night travellers.

In Kenya, the practice is called night running, or night dancing in parts of Tanzania and Uganda. It is claimed to be a form of spiritual possession in the communities where it is rampant.

Night runners are largely left to their own devices, but there is a sense of stigma attached to the practice.

I am a cultural studies researcher and wanted to explore how night running is seen in popular culture through fictionalised print media narratives or other appropriations. I set out to study the concept of night running as practised in rural communities in western Kenya, as well as its adoption in cities.

I conducted interviews with informants from Kisumu and Vihiga counties in western Kenya to examine the ritual and its marginal taboo position. The ritual exists on the margins because it’s a practice deemed unacceptable in public. I also examined Kenyan newspaper archives between 1990 and 2020 to trace the transformation of public discourse around night running. These articles and letters to the editor acted as a repository of understanding by Kenyans from different regions about night running.

I found that in the 1990s, newspapers reporting on night running largely exposed the ritual and its perceived links to witchcraft. Most of the reports captured the violence meted out on suspected night runners, or reflected on cases of night runners causing havoc.

These references to either night running or witchcraft appeared as hard news and in letters to the editor. They illustrated heightened stigma. In one letter to the editor published on 20 February 1993 in Kenya’s oldest newspaper, The Standard, a reader observes

the decision to burn alive the wizards and witchcrafts as reported by the daily newspapers in Kisii district was an action long overdue … I find it difficult to condone their action and say that was a job well done. Wizards have done worse and have retarded developments.

In the post-2000 period, a column titled The Night Runner in The Standard offered a direct modification of the idea of night running. The columnist, Tony Mochama, assumed the persona of a night runner as an alter ego to document his night adventures in the capital, Nairobi. Each week, the column documented different activities, from watching soccer matches to attending parties and official events.

The column co-opted the public’s memory regarding the ritual figure of the night runner. Mochama invoked the night runner as his lens for seeing Nairobi by night. This column, therefore, offered a collective re-imagination. Readers were asked to re-imagine night running as a strategy of seeing, travelling and documenting the city of Nairobi by night.

I found that the inference in the column was that the night is a significant time-space that carries extensive activity and culture. The column presented the night runner as someone who disrupts the logical and accepted order of how to operate at night.

For instance, instead of taking the night as the time of rest, the contemporary night runner works, travels the city and explores its leisure zones.

By describing a night runner as someone who moves against the grain, Mochama turned night running into a metaphor for life in the city after dark. This view enabled his audience to look beyond the stigmatised ritual and imagine its usefulness as a signal for different forms of nightlife.

The contradictions

My study found that Mochama’s articles and others within the popular culture section of newspapers created space for forays into fictional and surreal tales of night running.

These narratives explored the ritual form of night running as defined by the veil of darkness – but also its contradictions in an over-illuminated city space.

The night runner, therefore, captures the anxieties of cityness embodied in the tensions of non-belonging, especially regarding social norms. This is in relation to subjects that exist outside acceptable social norms that dictate the night as a time of rest and sleep. The narratives also raised the complexities of taboo and family in the city, where boundaries are blurred because of the freedoms of urban life.

In Mochoma’s column, readers laugh at the antics of this night runner, who is an extrapolation of a rural ritual into the city. But they are also forced to recognise the uneasy kinship ties unveiled in urban living. The night runner, in this form, is seen to overcome the unknowability of the city and instead forces an introspective inquiry into human beings as creatures with secret and uncanny habits.

The popular night runner is thus a subject that has “four eyes”. This is defined by anthropologists Filip de Boeck and Marie-Francoise Plissart as a person with a heightened sense of sight to see beyond the obvious, to see the shadows, the supernatural that is part of the nocturnal city.

The urban night runner sees the underbelly of the city in the invisible networks that thrive in dingy bars and backstreets. Here, prostitutes, street families and the police create uneasy alliances. In this regard, to night run in the city is to run the night, to rule over the city and its moods.

This reimagination created space for alternative ideas of night running that are less taboo. Mochama’s column, which ran from 2006 to 2012, indicates a sustained national audience for these forms of night running narratives.

Why it matters

My study found that night running as understood in modern times is a duality: the ritual of persons running naked at night and causing havoc, and a symbol of navigating the nocturnal city against the grain.

The rise in popular imaginaries of night running has enabled a public re-contemplation that has perhaps removed stigma from the taboo act. This is seen in the way people playfully use the term to reference night time activities, such as working or leisure. And in the way columnists inject humour and imagination into its references in their narratives.

These competing narratives on night running operate side by side in the public milieu through the media: the earlier ritual practice, the fictionalised narratives, and the co-opted modern appropriations.

It is no wonder that a supposed group of night runners in Homa Bay, another county in western Kenya, publicly demanded that the government allow for the registration and recognition of their union in 2023. And earlier in 2019, the BBC ran a documentary, Meet the Night Runners.

The Conversation

Maureen Amimo is an Andrew Mellon African Urbanities postdoctoral fellow at Makerere University and teaches African literature at Maasai Mara University, Kenya.

ref. Kenya’s ‘night running’: how a rural ritual with links to witchcraft became an urban staple – https://theconversation.com/kenyas-night-running-how-a-rural-ritual-with-links-to-witchcraft-became-an-urban-staple-267333

How my time-space synaesthesia affects how I experience and ‘feel’ the new year

Source: The Conversation – UK – By Mary Jane Spiller, Senior Lecturer in Cognitive Psychology, University of East London

vatolstikoff/Shutterstock

I have a form of time–space synaesthesia, so the new year arrives for me in a very physical way. I feel myself move around the year, almost like I’m travelling along a structure. December sits low and to my left; January lifts and slides forward. The transition has a weight to it, as though the calendar itself shifts in space.

Synaesthesia is a perceptual condition where one sense triggers an experience in another sense. For some people, sounds trigger colours and shapes, or words might have tastes.

For others, like me, sequences such as months of the year or days of the week have precise places in space around our bodies. It is most commonly a developmental condition, which means that “synaesthetes” have experienced the world this way for as long as they remember. These synaesthetic experiences happen automatically, and are generally consistent over time for the person. Today is in front of me, tomorrow is to my left, and yesterday is to my right. If I ever woke up to find time had moved somewhere else, I would feel confused and lost.

For me, this makes the start of the new year feel like a physical transition, a time for new beginnings, as we move around the bend of time, leaving the old year behind me.

Like most people, between Christmas and new year, I completely lose track of what day it is — the whole week feels like a strange, timeless blur. Because of my time-space synaesthesia, this disorientation is amplified for me. The usual mental map I rely on to anchor dates and days seems scrambled, leaving me feeling unmoored.

As a cognitive psychologist, I have spent the last 20 years researching synaesthesia. I am fascinated by the way our minds help us experience the world around us, and particularly in the way we all experience the world differently. As well as helping to understand and document the synaesthetic experience itself, I am also interested in understanding the impact synaesthesia might have on other aspects of our lives.

Time-space synaesthesia provides an excellent way to explore how the brain organises time. For example, one of the benefits of these mental time-space calendars is an association with a better memory for historical events or important life events such as anniversaries or birthdays.

People with time-space synaesthesia may have cognitive advantages because their spatial mapping of time can serve as a powerful mnemonic aid. Research shows we learn skills like calendar calculation – such as knowing that December 1 1937 fell on a Wednesday, while December 1 2037 will be a Monday – faster and more accurately than people without synaesthesia. So our unique mental representations may help to boost memory and pattern recognition. This helps us understand the benefit of time being represented spatially and visually, rather than simply linearly.

Time-space synaesthetes also tend to have enhanced memory and attention for ordered information, such as dates and sequences, which may contribute to our strong performance in tasks involving time organisation, such as planning.

These mental timelines are so ingrained that they can override external cues — a phenomenon called the spatial Stroop effect. These automatic mappings can subtly influence decision-making when speed and spatial judgement matter.

It seems that it is not simply the effect of synaesthesia that drives these cognitive advantages. Research has highlighted differences between the brains of synaesthetes and non-synaesthetes. These differences may also give rise to wider cognitive differences unrelated to the sensory experiences. For example, time-space synaesthetes not only have good memories for times and dates, but also other aspects of memory too such as word lists, pictures or colours. Additionally, a 2015 study suggested time-space synaesthesia may be linked with more vivid mental pictures.

Roman numerals swirling in spirals in purples and blues
How do you experience time?
Jackie Niam/Shutterstock

The question that has always fascinated me is, why doesn’t everyone have
synaesthesia? We now know that synaesthesia has a genetic basis, and around 4% of the population experience a form of it. If you experience it, mostly likely a few others in your family will too, although it may be a different combination of senses involved.

Our environment and learning also plays a part in its development. The influence of cultural norms can often be seen in the spatial layout of synaesthetes’ mental calendars. For synaesthetes with a language that is read from left to right for example, the passage of time will also often move from left to right, or vice versa for those who read right to left. My own shape for the year is a kind of oval shape, with January at one end and August at the other, and I can’t help but feel that my experience of growing up in the UK with the September starting school year influenced it.

All in your brain

Brain imaging research is also helping us understand what is happening in the brain during synaesthetic experiences. For example, people with synaesthesia have brains that are wired for extra connectivity. Brain regions that normally handle separate senses (like colour, sound and spatial processing) talk to each other more. Imaging studies show pathways in central nervous system tissue linking perception with higher-level thinking, which helps explain why synaesthesia feels so seamless. Brain imaging research published in 2020 adds another layer: synaesthetes use spatial-processing regions when working with numbers, showing that our brains literally integrate space and sequence.

Time is associated with space within many cultures, with people who grew up in the UK, Europe and US tending to think of the future in front of them and the past behind. Time-space synaesthesia helps us to remember that even within different cultures, there will be differences in the way we experience the “movement” of time, as scientists think synaesthesia exists in all cultures. The new year is a reminder that time is not only something we measure but also something we inhabit. And our personal journeys through time may have strikingly diverse landscapes.

The Conversation

Mary Jane Spiller does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. How my time-space synaesthesia affects how I experience and ‘feel’ the new year – https://theconversation.com/how-my-time-space-synaesthesia-affects-how-i-experience-and-feel-the-new-year-272465

How to listen to a forest

Source: The Conversation – UK – By Lianganzi Wang, PhD Candidate, Sound and Music Computing, Queen Mary University of London

Alice Holt forest in Hampshire, UK. Gillian Pullinger/Shutterstock

I was walking in Alice Holt Forest on England’s Surrey-Hampshire border when I stopped to listen. Despite there being nobody nearby, a slow “breathing” sound filled my ears. This was not a trick. An artwork was turning live forest data into sound, making the air feel like it was gently rising and falling. In that moment, “climate change” stopped being abstract and became something I could hear.

The piece I could hear is called Dendrophone by composer Peter Batchelor. It maps sunlight, humidity and carbon dioxide readings into a multichannel sound field in real time. Wetter air sounds “stickier”, drier air “crisper”, bright light introduces a fine hiss. When CO₂ uptake is high, you can hear longer, steadier “breaths”.

This is part of a soundscape installation called Sensing the Forest that has been produced by a cross‑disciplinary team at Queen Mary University of London, De Montfort University and the public agencies, Forest Research and Forestry England. The aim is straightforward: to help people make sense of forests and climate through listening, not screens.

Dendrophone captures three easy‑to‑tell textures from live data. Humidity is heard as a “dry/wet” sound; sunlight energy as a subtle hiss (more juddery when activity is high, smoother when calm); and carbon dioxide uptake as “breathing” that becomes longer and steadier when uptake is higher, shorter and more uneven when uptake is lower.

Played over several speakers around the site in the woods, these sounds blend with birds, wind and visitors’ footsteps so people can hear the forest’s state as it unfolds in real time.

Dendrophone — Peter Batchelor.
Shuoyang Zheng, CC BY-NC

The team also installed two DIY, solar‑powered off‑grid audio streamers (essentially tiny radio stations) that broadcast the forest online and auto‑record at sunrise, midday, sunset and the midpoint between sunset and the next sunrise. Recordings are uploaded and stored online, building a long‑term installation soundscape dataset.

Crackles blended with light rain/wind at around 3pm (18 March 2025)

Sounds can also include species cues, the noises that various animals make. Tree Museum, by sound artist Ed Chivers, is another installation in the same exhibition that uses artificial woodpecker drumming to draw attention to the lesser-spotted woodpecker (an endangered species down in numbers by 91% since 1967 in the UK). If a sound disappears, what else do we lose?

The mix of the soundscape changes constantly. Listen at different times and you’ll notice the balance of natural sound, human sound and installation sound shifting. Weeks of rain make everything feel “wetter”; bright days bring out the hiss; busy weekends sound busier. Each is a clue to what the forest is experiencing at that moment.

Tubular bells blended with bird songs and a plane in the background at noon (28 May 2025)

In the forest, there’s a survey QR code to capture instant reactions, plus a guided walk to make “how to listen, what to notice” clear for everyone.

Sensing the Forest doesn’t claim to fix the climate crisis, but it offers something valuable – a sensory language for data and a not‑so‑distant threat. In a time of ecological strain, technology here is less about control and more about translation; a way to foster ecological empathy.

Next time you step into a forest, pause and listen. You might hear not just the present, but the future we share.


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The Conversation

Lianganzi Wang is pursuing a PhD at the Centre for Digital Music (C4DM), Queen Mary University of London, supported by the China Scholarship Council (CSC).

ref. How to listen to a forest – https://theconversation.com/how-to-listen-to-a-forest-268225

Why procrastination isn’t laziness – it’s rigid thinking that your brain can unlearn

Source: The Conversation – UK – By Annemieke Apergis-Schoute, Lecturer in Psychology, Queen Mary University of London

Nicoleta Ionescu/Shutterstock

Most of us have experienced it: a deadline approaches, the task is perfectly doable, yet instead of starting, we suddenly feel compelled to tidy a drawer or reorganise the apps on our phone. Procrastination feels irrational from the outside but gripping from the inside. Although it’s often framed as a failure of discipline, research shows it is far more linked to how flexibly (or inflexibly) our brains respond to discomfort and uncertainty.

In other words, procrastination isn’t a time-management problem – it’s an emotion-regulation problem. People don’t delay because they lack planning skills; they delay because their brains want to escape a difficult internal state. When I ask students why they procrastinate, their answers are strikingly consistent: “I don’t know where to start”, “I feel lost”, “I get anxious”, “I’m overwhelmed”. Not one says, “I don’t care” – procrastination usually comes from caring too much.

Crucially, avoidance prevents the brain from discovering something important: that starting is often rewarding. Even a tiny first step can release dopamine. This helps motivation increase after we begin – not before. But when we avoid the task, we never experience that reward signal, so the task continues to feel just as threatening the next day.

Cognitive flexibility

Cognitive flexibility is the ability to update expectations when circumstances change, shift strategy and break out of unhelpful patterns. It’s a basic building block of learning: the brain predicts, receives new information and adjusts accordingly.

Imagine waiting for a bus that’s stuck in traffic. A flexible thinker quickly switches to a normally longer but now faster tube route. An inflexible thinker keeps waiting – not because they don’t know the alternative, but because switching feels effortful or “wrong”, and their mind stays locked on the original plan.

I see this pattern clearly in my research on obsessive-compulsive disorder (OCD). While very different from procrastination, both involve difficulty shifting out of an initial prediction, especially when uncertainty or the risk of mistakes is involved. When the brain can’t update, it gets fixated.

Students today face a perfect storm. Phones and social media shrink attention spans. Perfectionism magnifies self-criticism. And anxiety is at record levels across UK universities. Together, these factors weaken the brain’s ability to update and adapt – exactly the ability needed to begin a challenging task.

Neuroscientifically, procrastination is a tug-of-war between two systems. One is the threat system, activated when a task feels uncertain, effortful or evaluative. This gives rise to thoughts such as “What if this is terrible?”, “What if I fail?”. The other is the reward system, activated by anything that feels good right now (scrolling, tidying, messaging with friends).

Overworked  man sleeping in front of laptop.
We’ve all been there.
SynthEx/Shutterstock

When the threat system dominates, it can be impossible to get started. For rigid thinkers, in particular, the brain struggles to update its initial prediction that the task is threatening or overwhelming. Avoidance becomes the only option – and that tiny hit of relief teaches the brain to repeat it.

Indeed, research shows procrastination is essentially a short-term mood repair: a quick escape from discomfort that creates more stress later.

A generation ago, procrastinating required creativity. You had to find distractions. Today, they find you. Social media is engineered to trigger dopamine-driven novelty seeking. For someone already anxious or overloaded, the phone becomes an ever-present escape hatch. As one student put it: “It is easier not to do the work.” Not because the work doesn’t matter – but because the alternative offers instant reward.

Flexibility can be trained

So how can we avoid procrastination? It isn’t about becoming more disciplined, but rather strengthening the brain systems that allow you to begin. Here are a few ways to do that.

1. Shrink the task. Break the work into concrete, manageable units – write a title, draft a few bullet points, or read one page. This reduces the perceived threat of a large, “amorphous” task and gives the brain small, frequent dopamine rewards for each step completed.

2. Use micro-shifts. Micro-shifts are tiny initiation actions – opening the document, placing your notes on the desk. They don’t shrink the task itself, but they interrupt the “stuck” state and gently nudge the brain into motion.

3. Shift perspective. Reframe the task as if advising someone else: “What would I realistically tell a friend in this situation?” This softens rigid, threat-focused thinking and helps the brain generate alternative, more flexible interpretations.

4. Build emotional tolerance. The discomfort of starting peaks quickly, then drops. Reminding yourself of that can make avoidance less compelling.

5. Make rewards immediate. Pair the task with something enjoyable – music, a warm drink, or working alongside others – so that the first step feels less punishing and more rewarding.

Taken together, these strategies strengthen the form of cognitive flexibility most relevant to procrastination – the ability to shift out of avoidance and into action when a task feels uncomfortable. Other forms of cognitive flexibility (such as rule-switching or motor flexibility) can be improved too, but through different kinds of training.

If you recognise yourself in the students describing feeling “anxious”, “overwhelmed” or “not sure where to start”, it doesn’t mean you’re lazy. It means your brain is struggling to shift state. Procrastination tells us far less about willpower than about how our minds cope with uncertainty and discomfort.

And the encouraging part is that procrastination isn’t fixed. Flexibility improves with practice. Every time you take even a tiny step – opening the file, writing the first line – you’re not just progressing on the task. You’re showing your brain that starting is doable, survivable and often rewarding.

Over time, those small shifts accumulate into something powerful: a mind that moves toward what matters, rather than away from discomfort.

The Conversation

Annemieke Apergis-Schoute received funding from The Wellcome Trust for previous OCD research.

ref. Why procrastination isn’t laziness – it’s rigid thinking that your brain can unlearn – https://theconversation.com/why-procrastination-isnt-laziness-its-rigid-thinking-that-your-brain-can-unlearn-270838

How Celtic languages spread across Britain and Ireland: why we need to reconsider the early story

Source: The Conversation – UK – By Simon Rodway, Lecturer in Celtic Studies, Aberystwyth University

The Celtic languages spoken today – namely Irish, Scottish Gaelic, Manx, Welsh, Cornish and Breton – all descend from Celtic languages once spoken across Britain and Ireland in antiquity. While the modern languages are well documented from the early middle ages onwards, what came before is far more mysterious.

Only fragments of earlier evidence survive, leaving major questions about where these ancient Celtic languages came from and how they connect not only to each other, but also to related languages once spoken on the European mainland, such as Gaulish.

Much of this early linguistic story unfolded before widespread writing reached the islands. Before the Romans arrived, Britain was barely known to the literate cultures of the ancient Mediterranean. Only a handful of early travellers recorded anything about the languages spoken there.

So, we have only sparse clues as to the languages spoken in Britain, notably a handful of plausibly Celtic place names recorded by Greek voyagers such as Pytheas of Marseilles, who visited Britain around 325BC.

Once Britain became part of the Roman empire, everything changed. We have plenty of written material from and about Roman Britain. It is almost all in Latin, the official language of the empire. But scattered within it are Celtic place names and ethnic names, along with a small number of inscriptions in Celtic itself.

Of huge interest to scholars are the handful of inscriptions in Celtic from Bath and Uley in Gloucestershire. These small traces may offer rare glimpses of the languages spoken by local people at the time.

Ireland and its settlers

Ireland presents a different picture. As it was never incorporated into the Roman empire, written evidence appears later. Not until the middle of the second century AD do we get a substantial amount of data in the form of the place and ethnic names recorded by the Greek geographer Ptolemy.

Literacy, like Christianity, arrived late in Ireland through contact with Roman or sub-Roman Britain. The earliest written material from Ireland dates from the early fifth century, or perhaps a bit earlier. It mostly consists of inscriptions on stone in the Ogham alphabet which, despite its exotic appearance, seems to have developed from a cipher based on the Roman alphabet.

Irish settlers later took Ogham to parts of western Wales and Cornwall. Though short and simple, these inscriptions are vital because they capture an early stage of Irish at the edge of the historical record.

Together, these fragments form the puzzle pieces through which we try to understand how Celtic languages spread across Britain and Ireland. But the Celticity of Britain and Ireland has been questioned in recent decades.

Some archaeologists have argued that the people of Britain and Ireland may never have been “Celtic” in the same sense as communities on the continent. They have pointed to differences in material culture and a lack of clear evidence for major prehistoric migrations.

They also noted that classical authors from the Greek geographer and historian Strabo (born around 64BC) onwards contrasted Britain and Celtica on the continent. This led a rejection of the mid-20th century orthodoxy of hordes of warlike Celts from central Europe pouring in to these islands during the iron age.

It has been supposed that Indo-European may have arrived early in the islands and developed there into Celtic, or that Celtic languages may have spread from the continent without much movement of people. The argument even spilled into popular commentary, most recently in a polemical and misleading book by journalist Simon Jenkins in 2022, who, contrary to all evidence, cast doubt on whether the Celts, as a people, even existed at all.

Reshaping the debate

But recent research is challenging those assumptions. Recent studies of ancient DNA have revealed waves of migration into Britain from regions that are now in France during the late bronze age and to a lesser extent, the iron age. These movements of people were not visible to archaeologists.

Of course, you cannot guess someone’s language from their genes. But these migrations provide a plausible vehicle by which Celtic speech may have arrived in Britain. And a recent study has shown that Pytheas, in the fourth century BC, placed Celts in Britain.




Read more:
Ireland, Wales and the scholar who helped unravel their Celtic connections


When taken together, these findings may support the old idea that Celtic languages were brought to the islands by migrating Celts after all. It’s certainly an exciting time to be studying ancient Celtic in Britain and Ireland.

This is the backdrop to new research underway by myself and colleagues at Aberystwyth University. We are gathering every surviving piece of evidence for early Celtic languages in Britain and Ireland before around 500AD. We shall compile the first comprehensive dictionary of the ancient Celtic languages of these islands.

Bringing all of this material together will help answer longstanding questions about how the Celtic languages are related and how they fit into the wider Celtic world of ancient Europe.

We will never recover the full picture of the Celtic languages spoken in Britain and Ireland more than 2000 years ago. But by piecing together the clues left behind, we can begin to understand the linguistic landscape that shaped the Celtic languages still spoken today.

This article features references to books that have been included for editorial reasons, and may contain links to bookshop.org; if you click on one of the links and go on to buy something, The Conversation UK may earn a commission.

The Conversation

Simon Rodway receives funding from Leverhulme Foundation. He is affiliated with Plaid Cymru.

ref. How Celtic languages spread across Britain and Ireland: why we need to reconsider the early story – https://theconversation.com/how-celtic-languages-spread-across-britain-and-ireland-why-we-need-to-reconsider-the-early-story-271338

New year, new gym injuries

Source: The Conversation – UK – By Adam Taylor, Professor of Anatomy, Lancaster University

Khosro/Shutterstock

As Christmas fades into memory, many of us turn our attention to the new year and the promise of a fresh start. For millions of people, that means joining a gym in the hope of exercising more and improving their health.

In the UK alone, more than ten million adults hold gym memberships, and January attendance is around 28% higher than in December as people act on new year resolutions.

And it is a good idea. In the depths of January, physical activity can give you an endorphin kick, caused by the release of natural brain chemicals that improve mood and reduce stress. Regular exercise is also linked to a lower risk of serious conditions including cancer, heart disease, stroke, type-2 diabetes and many more.

The problem is not exercise itself. It is how people start.

The body adapts to exercise gradually. When it is pushed beyond what it is ready for, the risk of injury rises sharply, and pain does not always appear straight away.

Delayed onset muscle soreness (Doms) is the stiffness and tenderness that typically shows up one to three days after unfamiliar or intense exercise. It occurs because exercise causes tiny microscopic damage to muscle fibres, especially when you are returning after a long break or trying a new type of movement.

Doms is common and usually harmless, but it is also a useful warning sign. It signals that your body needs time to adapt before you increase intensity, weight or volume.

Shoulder injuries

Some parts of the body are more prone to injury than others. Joints that move a lot or carry heavy loads are particularly vulnerable.

The shoulder is often top of the list for gym-related injuries. Its wide range of movement is ideal for daily tasks but risky under load. Anatomically, the shoulder connects the arm to the torso and is not designed to carry heavy weight.

When people suddenly start lifting weights or doing pull-ups, strain often falls on the rotator cuff, a group of tendons that stabilise the joint. These tendons are easily irritated, slow to heal and rarely get a rest, as most exercises for the arms, chest, back and even some leg exercises place load through the shoulder.

Knees and lower back

The knees are generally well adapted to everyday movement, but long periods of inactivity weaken the muscles that support the joint. When those muscles waste away, the knee can move in ways it should not. Starting intense exercise on top of this instability raises the risk of serious injury, including damage to the cruciate ligaments.

Going too heavy in weight, too early is a common trigger. Squats, lunges and leg extensions are frequent culprits.

The lower back is another major injury hotspot. Even before exercise begins, the spine already carries a high load from body weight and posture alone. The pelvis links the upper and lower body, so weakness or instability in the legs can transfer strain upwards to the back. Add heavy lifting or poor technique, and the spine can quickly become overloaded.




Read more:
Pelvic floor dysfunction: what every woman should know


Lower back pain from muscle strain is so common among weightlifters that it has its own label, “weightlifter’s back”. Exercises most often linked to back injuries include sit-ups, squats and deadlifts, burpees and movements that involve twisting while holding weight.

In gyms, free weights are more likely than machines to cause fractures, dislocations and soft tissue injuries. The group most likely to get hurt is not complete beginners, but young men under 41 who already have several months of training and exercise regularly. Confidence, it seems, can be as risky as inexperience.

Home discomforts

Injuries are not limited to gyms. In the US, more than 70,000 emergency department visits over a four-year period were linked to home exercise equipment. Treadmills accounted for 66% of these injuries. Older women were more likely to sustain serious head injuries and were 14 times more likely to require hospital admission.

Among adults over 25, the most common injuries were strains and sprains affecting the legs. For those over 65, stationary bikes were a more frequent source of harm.

Some equipment carries rarer but severe risks. Abdominal rollers have been linked to spinal cord injuries. For people over 40, especially those returning to exercise after years of inactivity, there is also a small but real risk of a heart attack. This is why gradual progression matters.

The good news is that safe options do exist. Many apps and online programmes are designed to build fitness gradually, including for people with existing health conditions. Any movement is better than none, as sedentary behaviour carries its own serious risks.

The Conversation

Adam Taylor does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. New year, new gym injuries – https://theconversation.com/new-year-new-gym-injuries-271412

I volunteer in a repair cafe: we can help you learn to fix your broken Christmas gift

Source: The Conversation – UK – By Stuart Walker, Research Fellow in Sustainabilty Assessment, University of Sheffield

Hundreds of broken toys get thrown away after Christmas. Zamrznuti tonovi/Shutterstock

It’s a Wednesday evening in a town hall in Penryn in Cornwall, and my friend Pete and I are volunteering at our local repair cafe. We set up tables, get our tools ready, put up a sign outside and wait for people to arrive.

By the time we pack up three hours later, along with two other volunteers we have helped repair three vacuum cleaners, a pair of jeans, a laptop, a desk lamp, a clock and an electric skateboard, as well as replacing many buttons, zips, fuses, and bulbs. Some products have returned home with their owners, either to come back next time to fit a part we’ve ordered, or sadly because their design means we can’t repair them.

Repair cafes are often busy in the weeks post-Christmas when people discover their gifts are either broken or damaged in the post and they want to save them. One report found nearly half of toys received at Christmas will be broken and end up in landfill by spring.

The repair cafe movement tries to reduce the effect of this on the environment by encouraging citizens to repair rather than replace items. We regularly repair coffee machines, headphones, torches and fit new screens for computers.

The Repair Cafe International Foundation currently identifies 3,823 cafes globally, including 446 in the UK and 550 in Germany, and a total of 2,500 across the EU.

The “right to repair law”, officially the European Directive on Repair, was passed in April 2024, and is helping to drive the movement to repair more everyday items across Europe, by forcing manufacturers to do more to help consumers to get items repaired. A recent study found that around 35 million tonnes of goods were discarded across Europe, when they could have been repaired.

The value of the movement is in showing people they don’t need to replace products, and helping them learn how to fix themselves. Even if a volunteer ultimately does the fixing, sitting opposite someone as they realise their Christmas gift is no longer broken is a really positive experience. It can get quite emotional.

Stuart Walker (in white shirt) sitting at a table helping people repair items.
Stuart Walker (in white shirt) helping people repair items in Falmouth, Cornwall.
Falmouth and Penryn Repair Cafe

We always start with the simplest repair: cleaning. Often a proper clean either fixes a problem or reveals the cause. Then perhaps we’ll teach someone how to successfully glue parts back together using clamps to hold things in place, or to use a cotton bud to clean up after leaking batteries.

With complex products or electronics, I teach people to methodically work through the product, removing parts and testing with our tools as they go, until we can identify exactly which part isn’t working and why, making what seemed an overwhelming problem into a simple repair. We can then either fix, replace or remove any broken parts.

Recently I helped someone find the cause of their broken drill (a small wire disconnected from a light on the top). I showed them how to solder, and after a few practice runs on some spare parts they reattached the wire and repaired the tool. As they put it, “fixed drills and brand new skills”.

Repairs takes time. If you try to do it quickly, the repairer just ends up doing it all. That is less rewarding for most people. It makes the owner feel like they have to pay, changes the dynamic, and doesn’t teach anyone anything.

I’ve had lovely experiences repairing heirlooms and jewellery for elderly ladies, and toys for kids. Volunteer repairers don’t charge for their time, so a repair is either free or done for a small donation.

What we repair

Vacuum cleaners are one of the most common items brought in, and consistently in the top three items reported by 80 of the UK’s 446 repair cafes. Repairing a machine can delay the emission of the 70kg CO₂ related to the materials and manufacture of a new one.

Fixing things can be expensive if you take objects into commercial repairers. A 2021 study in Norway found the “consistently low price of new products” to be the most common barrier to commercial repair. If things are cheap, it can feel easier to just buy something new, and we don’t always think about the waste we are creating.

Repairs save people money, and by slowing the constant influx of new purchases it reduces global emissions as well, and we hope, over time, we are helping the wider public learn some of these forgotten skills too.


Don’t have time to read about climate change as much as you’d like?

Get a weekly roundup in your inbox instead. Every Wednesday, The Conversation’s environment editor writes Imagine, a short email that goes a little deeper into just one climate issue. Join the 47,000+ readers who’ve subscribed so far.


The Conversation

Stuart Walker works for the Grantham Centre for Sustainable Futures. He is affiliated with Hope Valley Climate Action and the Repair Cafe Movement.

ref. I volunteer in a repair cafe: we can help you learn to fix your broken Christmas gift – https://theconversation.com/i-volunteer-in-a-repair-cafe-we-can-help-you-learn-to-fix-your-broken-christmas-gift-271459