This article originally appeared on The Conversation. You can read it here.

When it comes to losing weight, people often want know the best way to shed excess pounds – and there’s no shortage of fad diets or fitness crazes claiming to have the “secret” to fat loss. One theory even suggests that exercising at around 60% of your maximum heart rate will bring our bodies into a so-called “fat burning zone”, optimal for losing weight.

But does this “fat burning zone” even exist?

First, it’s important to understand a little about our metabolism. Even if we were to sit at our desk all day, our body still needs “fuel” to meet energy demands. This energy comes from carbohydrates, proteins, fats and phosphates. However, the rate at which we use them, and how much we have available, varies between people. It depends on a number of factors, such as dietary intake, age, sex and how hard or often we exercise.

Generally, exercising at lower intensities – such as sustained walking or light jogging – doesn’t require as much effort by our muscles as sprinting, for example. This means the amount of energy needed by the body is lower, so energy supply predominantly comes from fats.


But as exercise intensity increases, fat can’t be metabolised fast enough to meet increased energy demand. So the body will use carbohydrates, as these can be metabolised more rapidly. This means there is indeed an exercise intensity where fat is the predominant energy source.

At the lower end of this spectrum is our resting state. Here, the number of calories our body needs to function is considerably low, so the body primarily metabolises fat to use for energy. This means the potential “zone” for metabolising fat is between the rested state and the level of exercise intensity where carbohydrates become the dominant energy source (in terms of percent contribution to energy demand).

But this is a wide range, which lies between a resting heart rate of around 70 beats per minute to around 160 beats per minute during moderate effort exercise (such as cycling at a constant speed where holding a conversation becomes challenging), where the crossover from using fat to carbohydrates for energy occurs.

The issue with such a wide zone is that the person exercising wouldn’t necessarily be optimising their ability to metabolise fat, because as the exercise intensity increases there’s a gradual change in the balance of fat and carbohydrates your body uses for energy.

Fat burning zone

So how can we know at which point our body will switch from using fat to other fuels for energy? One approach researchers take is assessing how much fat is being used for energy during different exercise intensities.

By measuring how much air a person expels during an exercise test which gets progressively harder, physiologists have been able to calculate the relative contributions of fat and carbohydrates to meet the exercise demand at different intensities. The highest amount of fat burned is called the “maximal fat oxidation rate” (or MFO), and the intensity this occurs at is termed “FATmax”.

Since this method was first used by researchers, studies have shown that as the intensity rises from around 40-70% of a person’s VO₂ max – which is the maximum amount of oxygen a person can use during exercise – there’s an increase in the rate of carbohydrates and fats being used. The rate of fat being burned starts to decline at higher intensities as the body requires energy more rapidly.

The so-called “fat burning zone” has been shown to occur anywhere between about 50-72% of a person’s VO₂ max. However, the ability to burn fat is also based on genetics, with studies showing that this fat burning zone is likely to be lower in overweight or obese people – around 24-46% of their VO₂ max – and higher in endurance athletes.

Another point to consider is how much fat we actually burn during exercise (if we express it in grams per minute). The answer is: surprisingly little. Even in studies with athletes, at FATmax, participants only burned on average a mere 0.5 grams of fat per minute. This would equate to around 30 grams of fat per hour.

In the average person, this appears to be even lower, ranging between 0.1 and 0.4 grams of fat per minute. To put it in perspective, one pound of fat weighs around 454 grams. So, though training in this fat burning zone will help with fat loss, this might also help explain why it takes some people longer to lose fat through exercise.

But there is evidence that following certain diets (such as intermittent fasting or a ketogenic, high fat diet) and longer exercise can increase the actual amount of fat we burn.

Perhaps it’s time to no longer consider “burning fat” to have a “zone”, but rather an individualised “sweet spot” which can be used to optimise our exercise regimes to lose weight. Regular physical activity around this “sweet spot” (which typically occurs at a low to moderate feeling of effort, for example 30-60% of your maximal effort, or a perceived exertion level of one to four out of ten) will likely improve our body’s efficiency in using fat for energy – and translate to a lower overall body fat percentage.

Justin Roberts is Associate Professor, Health and Exercise Nutrition, Anglia Ruskin University

Ash Willmott is Lecturer in Sport and Exercise Science, Anglia Ruskin University

Dan Gordon is Principal Lecturer Sport and Exercise Sciences, Anglia Ruskin University

  • Therapist shares 5 ways to be ‘less annoying’ in conversations and it’s a must-watch
    Photo credit: CanvaTwo women having an enjoyable conversation.
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    Therapist shares 5 ways to be ‘less annoying’ in conversations and it’s a must-watch

    None of these habits are malicious. But they sure are annoying.

    Most people think they come across as helpful, engaged, and supportive in conversations. But according to one therapist, these talking habits may be sending a very different message than intended.

    Jeffery, a licensed therapist on TikTok, breaks down five common conversational mistakes people make that can come across as annoying. In the post, viewers didn’t just agree with the list. They began recognizing the same behaviors in friends, family, and even themselves.

    Making the conversation about yourself

    People can mistake sharing personal experiences for the perfect way to show empathy and compassion. It begins innocently enough when someone opens up about something personal. Unfortunately, the listener responds with a story of their own. Both people are trying to connect, but the focus has now completely shifted.

    “When someone constantly redirects conversations back to themselves, people start feeling unimportant,” Jeffery explains. “When every story somehow becomes about you, people stop feeling listened to and start feeling dismissed.”

    A 2023 experiment suggested that reciprocal disclosure increases interpersonal trust. However, an imbalance in the conversation can create feelings of one-sidedness. This “stealing of the spotlight” reduces connection.

    defensive conversation, psychological defensiveness, misunderstanding, negative behavior
    An unhappy couple gets defensive.
    Photo credit: Canva

    Getting super defensive

    Few things shut down a conversation faster than defensiveness. Even simple misunderstandings can turn tense when people instinctively try to correct rather than understand.

    “If every single piece of feedback turns into an excuse or an argument, people eventually stop being honest with you,” Jeffery points out. “Constructive feedback and even some criticism is not always an attack. Sometimes people are simply trying to improve the relationship or communicate something important to you.”

    Psychologists describe this behavior as “psychological defensiveness.” Interestingly, a 2024 study found that defensiveness can be reduced if people are warned beforehand in the right way. Conversation works best when it is framed as a collaborative effort rather than an educational or teaching moment.

    polygraph, apology, interrogation, Marcus Aurelius
    A woman receives a polygraph test.
    Photo credit: Canva

    Drilling people after they apologize

    There is a delicate balance between asking for clarity after an apology and turning the conversation into an interrogation.

    “If someone apologizes and you accept it, but then you keep hammering them over the mistake afterward, it will become exhausting and very annoying,” Jeffery adds. “If people feel like apologizing never actually ends the conflict, they actually become less likely to take accountability in the future.”

    People often mistake feedback for a personal attack on their own truth. There’s a popular statement often attributed to Marcus Aurelius claiming that much of what we perceive is shaped by interpretation rather than fact. People can share their opinions. We don’t have to defend ourselves against all of them.

    Stop constantly complaining

    Everyone deserves an opportunity to vent. But when every conversation circles back to frustration without change, it can become emotionally exhausting for the listener. Over time, even the most supportive friends can start to pull back.

    “Talking about problems is normal,” says Jeffery. “But if almost every interaction revolves around negativity, people start associating you with emotional exhaustion. Nobody wants to leave conversations feeling drained every single time.”

    This pattern of constant, dissatisfied venting has even found its way into pop culture. Maybe you remember the infamous George Costanza from the award-winning show Seinfeld. His nonstop stream of complaints was a running joke about negativity. It’s fun to watch and laugh at, but far less enjoyable to encounter in real life.

    negative emotions, conversational balance, validation, comparison
    A conversation turns to comparison.
    Photo credit: Canva

    One-upping people’s negative emotions

    Sometimes, someone takes a risk and shares a particularly challenging experience. In an attempt to show empathy, saying “I get it” might land more like “that’s not a big deal.” It’s important to offer emotional validation rather than comparison.

    “If someone opens up about something painful and your immediate reaction is to explain how you had it worse, it can make the other person feel completely invalidated,” Jeffery says. “They just want to feel heard and emotionally supported in that moment.”

    A 2023 study revealed that someone trying to relate can sometimes redirect attention away from the original speaker. People feel more supported when their emotions are directly acknowledged instead of reframed or one-upped.

    self-reflection, comment section, familiar conversations, behaviors
    A woman reflected in mirrors.
    Photo credit: Canva

    The comments quickly turn to self-reflection

    Many people said Jeffrey’s list felt immediately familiar, whether in conversations with friends or in their own behavior. These annoying habits became surprisingly relatable once someone pointed them out. Here are some of those thoughts:

    “silently reposting this for one of my friends to find”

    “The first one has ended relationships for me, not because I do it, but because they did it. It’s absolutely exhausting.”

    “I know one of my friends are gonna tag me in this later”

    “I’ve noticed over the years that my annoying personality will surface when I’m trying to protect myself..”

    “I have such a hard time with #1 and I am so aware of it sometimes but I find it so difficult to not do when talking to someone.”

    “I do all of these maybe I should go back to therapy”

    What might be surprising is that many of these habits are things people slip into without realizing it. Jeffrey’s list doesn’t suggest people are intentionally difficult. He points out that annoying conversations can arise from good intentions, too. Allowing a person to be heard can matter more than offering advice that might fix the problem.

  • More women are rejecting ‘optimization culture’ for realistic wellness plans
    Photo credit: CanvaA woman intensely exercises, left, and a morning stretch, right.

    Being fit used to mean getting enough sleep, drinking more water, and moving your body, perhaps in a daily walk. With the explosion of social media and digital self-help trends, finding an acceptable level of wellness can feel like stepping into a full-time job with daily performance reviews.

    For many women, what started as self-care has slowly become another exhausting form of self-optimization. And increasingly, they’re pretty much done with it. According to Women’s Business Daily, one of the biggest wellness shifts happening right now is a move away from extreme routines. Women want habits that actually fit into real life.

    fitness culture, self-optimization, realistic wellness, mindful living
    An intense workout.
    Photo credit: Canva

    Wellness feels like a full-time job

    Instead of chasing perfection, more women are choosing what can be described as a more realistic approach to wellness, incorporating sustainable routines built around balance and emotional well-being rather than climbing a never-ending ladder of constant improvement.

    The shift comes after a solid decade of what many refer to online as “optimization culture.” This exhausting idea assumes that every part of life needs to be carefully measured, improved, and optimized.

    Experts believe this mindset is not only making people miserable; it’s unsustainable.

    wellness overload, social wellness, health fatigue, hustle culture
    An exhausting routine.
    Photo credit: Canva

    A backlash against the “always improve yourself” culture

    A recent article in Psychology Today found that “wellnessmaxxing” trends turn self-care into another form of anxiety. This is especially true when routines become so demanding that people feel more guilt than relief. As creators post TikToks showing themselves “maxing out” in some kind of self-congratulation, they spread unhelpful expectations that no longer promote self-care.

    Verywell Health explains that these influencers broadcast an all-consuming performance metric. People now face a painful realization that they can never do enough. It’s hard to miss the irony that wellness has begun to feel unhealthy.

    Women are increasingly embracing low-pressure routines instead of overly aspirational ones. Think walks instead of cross-training, and a morning meditation instead of a week-long stay at a Tibetan monastery. It’s okay to just eat more vegetables instead of a perfectly balanced daily nutrition plan of 150 grams of protein, wheatgrass smoothies, and specifically rated pH-balanced alkaline water.

    After all the extreme exercises, self-help books, and sophisticated meal plans, it’s time to get back to basics. Here’s one version of a realistic plan: drink some water, get outside, and try to sleep a little better.

    anti-hustle, performance pressure, happiness, lifestyle
    A casual walk with a dog.
    Photo credit: Canva

    Getting back to the basics

    A beauty editor writing for Who What Wear documented her attempt to follow a social-media-inspired wellness reset. With all the expensive and complicated habits she hoped would unlock the “incredibly high-functioning, ultra-productive version” of herself, she came away understanding that she should stick with the basics.

    Modern life already asks women to juggle careers, caregiving, appearance standards, finances, and relationships. Somewhere along the journey, wellness became just one more category to add to the pile.

    work life balance, culture, community, women wellness
    Maintaining a perfect life balance.
    Photo credit: Canva

    Women are choosing simple, sustainable routines

    Finding realistic wellness is a trend that reflects a growing desire for community-centered wellness rather than isolated self-improvement. Instead of wellness looking like a solo pursuit for an achievement award, many women are leaning toward connection: walking groups, shared meals, accountability with friends, and being honest about feeling burned out on all of it.

    The Times reports that people feel walking groups are less intimidating and more emotionally supportive. People don’t just want fitness; they want to belong to something.

    A 2025 study in Frontiers in Psychology focused on the benefits of women finding social support groups. Programs that incorporated women’s preferences into their daily lives were more likely to be enjoyed and maintained.

    Wellness cultures have told women the answer is to do more: more discipline, more self-reflection, more perfect sleep, more work dedication, more family direction, more effort.

    Making life more enjoyable and realistic can help well-being feel easier to maintain. A joyful life is better lived “in” than constantly measured “against” unrealistic expectations.

  • Is baby talk bad? Why ‘parentese’ actually helps babies learn language
    Photo credit: MoMo Productions/DigitalVision via Getty ImagesEmphasizing the sounds of certain words to young children can help them retain language, not confuse them about speaking properly.

    Many parents have heard the warning: Don’t use baby talk with babies and toddlers. Instead, caregivers are often encouraged to speak properly and use adultlike language, out of concern that simplified speech could confuse children or delay language development.

    But my research, which I highlighted in in my new book, “Beyond Words,” suggests the opposite is true. The sing-song voice many adults instinctively use with infants, sometimes called “baby talk” but more accurately known as “parentese” or infant-directed speech, actually helps children learn language.

    Far from confusing babies, exaggerating phrases like “Loooook at the doggie!” capture their attention, help them detect patterns in speech and strengthen social bonding.

    And the funny mistakes children make along the way, such as saying “goed,” instead of “went,” or “mouses” instead of “mice,” are not signs that children are learning language incorrectly. They are evidence that children are actively working out the rules of language for themselves.

    A man holds his hands away from his face and leans over a small baby lying on a bed and smiles.
    Speaking ‘parentese’ to a child doesn’t involve nonsense words. BjelicaS/E+ via Getty Images

    What parentese really is

    When many people think of baby talk, they imagine nonsense phrases like “goo goo ga ga” or made-up words like “num nums.” But that’s not what linguists and developmental psychologists mean by parentese.

    Parentese uses real words and grammatically correct sentences, but with exaggerated intonation, a higher pitch, stretched-out vowels and a slower rhythm. Think of the way a caregiver might naturally say: “Hi, baaaaby! Are you huuungry?”

    There is little evidence that occasional playful nonsense words harm children’s language development. But studies suggest that parentese in particular helps babies pay attention to speech, recognize patterns and engage socially.

    Adults across cultures tend to speak this way to infants instinctively. Even people who swear they never use baby talk often slip into it around babies.

    Researchers have found that infants actually prefer listening to parentese over regular adult speech. The exaggerated sounds and slower pacing make language easier to process. Babies are better able to pick out individual sounds, notice word boundaries and recognize patterns. In other words, parentese helps tune babies into language.

    It also strengthens emotional connection. Language learning does not happen in isolation. Babies learn through warm, responsive interaction with caregivers during feeding, play, bath time and everyday routines.

    Interestingly, humans are not the only ones who respond to this style of communication. Studies have even shown that cats react more positively when people use a baby-talk voice with them.

    Babies are not passive learners

    Children do not learn language simply by copying adults word for word. They actively test hypotheses about how language works. That is why toddlers make predictable and surprisingly logical mistakes.

    One common example is overgeneralization. A child learns that people form the past tense of many verbs by adding “-ed,” so they produce forms like “goed,” “eated” or “comed.”

    These are not random errors. In fact, they show that the child has understood a grammatical rule and is trying to apply it consistently. The problem is simply that English is full of irregular exceptions. The same thing happens with plurals. Children may say “foots” instead of “feet” or “mouses” instead of “mice.” Again, the logic behind these errors is sound.

    Linguists sometimes say that children are little scientists, constantly testing patterns and revising their understanding as they receive more input from the world around them.

    Why toddlers call everything a ‘dog’

    Young children also make predictable mistakes with meaning.

    A toddler might learn the word “dog” and then use it for every four-legged animal they encounter. Linguists call this overextension. On the flip side, some children use words too narrowly. A child may use “dog” only for the family pet and not recognize that other dogs belong in the same category. Linguists call this tendency underextension.

    These mistakes reveal how children organize and categorize the world around them. They are gradually mapping words onto objects, people and experiences.

    Pronouns are another tricky area. Small children often confuse “me” and “you” because these words constantly shift depending on who is speaking. If a parent says, “I’ll pick you up,” the child hears themselves called “you.” But when they try to repeat the sentence, they may not yet understand that the labels switch from speaker to speaker.

    This is why toddlers sometimes say things that sound unintentionally cute or confusing. But beneath the confusion is a sophisticated learning process.

    Even the Cookie Monster gets it wrong

    Children’s speech errors are so recognizable that they often appear in popular culture. Sesame Street’s character Cookie Monster famously says things like “Me want cookie,” while Elmo often refers to himself in the third person: “Elmo wants this.” These speech patterns mirror real stages of child language development. Young children commonly confuse pronouns or refer to themselves by name before mastering forms like “I,” “me” and “mine.”

    Despite occasional complaints from adults, there is no evidence that hearing this kind of speech harms children’s language development. If anything, it reflects the natural experimentation children go through.

    A Cookie Monster puppet stands near a black tarp with its mouth open and holds a cookie.
    The Cookie Monster saying ‘Me want cookie’ won’t teach babies and young kids to speak incorrectly. Brian Killian/WireImage via Getty Images

    ‘Pasketti’ and ‘wabbit’

    Pronunciation develops gradually too. Young children often simplify difficult sounds and groups of consonants. “Spaghetti” becomes “pasketti,” “rabbit” becomes “wabbit” and “yellow” may come out as “lellow.”

    Speech-language specialists call these simplifications phonological processes. They are a normal part of development because some sounds are physically harder to produce than others. Sounds such as r, th, sh and ch tend to develop later because they require more precise control of the tongue and mouth.

    Most children naturally outgrow these pronunciation patterns as their speech matures. However, persistent difficulties can sometimes signal a speech or language disorder, which may require professional support.

    A graphic image shows a young child's head with various colorful thought bubbles inside.
    Children don’t learn language by copying adults word for word. They learn through interaction, experimentation and repetition. DrAfter123/DigitalVision Vectors via Getty Images

    Mistakes are part of learning

    Parents are often under enormous pressure to do everything right, including helping their children learn to speak a language. But children do not learn language by avoiding mistakes. They learn through interaction, experimentation and repetition.

    Parentese helps babies focus on speech and engage socially. The funny mistakes toddlers make reveal that they are actively piecing together the complex system of language and are often signs of normal development. Language acquisition is messy, creative and remarkably sophisticated.

    Speaking in an exaggerated sing-song voice to a baby is not something parents and caregivers need to feel embarrassed about.

    Far from harming language acquisition, it may help lay the foundation for it.

    This article originally appeared on The Conversation. You can read it here.

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