Fitness
Why Fitness Advice Is So Confusing (and What to Do About It)
Learning about exercise can be overwhelming. One YouTube channel tells you what to do, and you think, OK, I’ve got that. Then you see an Instagram post that tells you something else entirely. Stop by the gym and ask a trainer, and they’ll let you know that both of your sources are overthinking it and instead you should do things their way. Why is it all so complicated? I have some thoughts on that, and some tips for navigating the confusion.
One of the biggest reasons is that there are many good answers for each of your fitness questions. So you don’t have to find the one true correct answer before doing your workout, any more than you’d need to identify the unquestionably best restaurant in town before going out to eat. Let’s dig in to some of the types of confusion that you’re probably running across, and what to do about each.
Not everybody is talking to you
First I’d like to address the biggest reason we see conflicting advice in any subject: Different experts are talking to different audiences. You, the reader or viewer, are not in all of those audiences at once.
For example, if you search for “how to squat,” you’ll find a variety of answers to the question. One expert might have advice for bodybuilders to build as much leg muscle as possible. Another might be telling powerlifters how to get strong and move the most weight in competition. Yet another might be introducing beginners to the idea of exercising at all. It makes sense that they would all say different things, right?
How to navigate this: Decide on a type of advice to follow. If you want to learn the basics of powerlifting, for example, there are books and videos and real life human coaches who will teach it to you. And if you’re a beginner, don’t seek out advice for advanced lifters; it won’t be helpful to you yet.
If you can’t decide what direction you’re doing, it’s fine to check out different sources and see what they each say. But don’t expect them to all agree with each other.
The algorithm rewards pointless debates
The basics of training are pretty simple, even if it may not seem that way when you’re a beginner. You get better at running by putting in time on your feet, and not trying to turn every training run into a race. (See our beginners’ guide here.) You get stronger by lifting heavier weights over time, although that doesn’t have to mean lifting more every single week—best to follow a program that guides you through a sensible path for progress. And if you’re brand new to everything, all you really need is to build a routine and not give up; literally all of the details can wait.
But we like to learn more, and if we’re confused or anxious, we often think the cure is more information. So we visit YouTube (or the information firehose of our choice) and see what it has to say. But here is where the algorithm stands in our way: YouTubers don’t have much of a career if they just put out a few videos with basic information and then sit back and relax.
So we get in-depth debates on things like: Which running shoe might be marginally better than another? Should you do your morning workout before or after breakfast? Should you do dumbbell lateral raises with your hands in a neutral position or with your pinkies pointing slightly upward? (You might think I’m joking with that last one, but it has become a hugely controversial subject.)
Creators also get more engagement if they react to other creators, cultivate rivalries, say that everyone else has it wrong, debate creators with the opposing viewpoint, etc. The algorithm rewards confusion, because it makes people watch more videos. In reality, the direction of your pinkies on lateral raises is going to make, at most, 0.0000001% of the difference in how your shoulders look a year from now. Even if you could get a solid answer on which way is best, it wouldn’t actually matter.
How to navigate this: One day I was typing the word “optimal,” and my phone auto-corrected it to “optional.” That’s a life lesson right there. Optimal is optional. If you’re doing things basically good enough, optimizing the details is going to make very, very little difference. When you are an Olympic athlete and tiny differences in your performance could make or break your chances for a gold medal, you can revisit these questions. For now, just remember that there are many paths toward fitness, and you can take whichever you find simplest or most enjoyable.
Most advice is meant to nudge you in a direction
Let’s step out of the social media algorithm for a moment, and talk about the very reasonable things you might hear from a trainer.
As a trainer is trying to guide your movement, they’ll give you cues. These are not meant to be objective descriptions of exactly what happens in a lift, but rather nudges in a particular direction. For example, if your heels pull off the ground as you are squatting, you might be told to “drive through the heels.”
This can lead to confusion if you hear another trainer say to “keep even pressure on all parts of your foot.” That would be a better cue for somebody who is tipping back onto their heels, but it could work for the person who is getting up on their toes as well. The truth is that both trainers are trying to do the same thing: keep you from rocking too far forward or backward.
Since cues are nudges, they can’t really be right or wrong; they can just be helpful or unhelpful. The cue that works for someone else may not be the right cue for you.
How to navigate this: Ask for clarification if you’re getting the advice in person. If not, try both of the conflicting cues, and see if one of them helps you to feel stronger or do the movement better. You may also want to read our explanations of the cues that tend to confuse people most.
Fitness
Higher fitness levels linked to lower risk of depression, dementia – Harvard Health
People with high cardiorespiratory fitness were 36% less likely to experience depression and 39% less likely to develop dementia than those with low cardiorespiratory fitness. Even small improvements in fitness were linked to a lower risk. Experts believe that exercise’s ability to boost blood flow to the brain, reduce bodywide inflammation, and improve stress regulation may explain the connection.
Fitness
These 20-Minute Burpee Workouts Replaced His Entire Gym Routine – and Transformed His Physique
While many swear by them, most people see burpees as a form of punishment – usually dished out drill sergeant-style by overzealous bootcamp PTs. Often the final blow in an already brutal workout, burpees are designed to test cardiovascular fitness, muscular endurance and mental grit. Love them or loathe them, they deliver every time.
For Max Edwards – aka Busy Dad Training on YouTube – they became a simple but highly effective way to stay fit and lean during lockdown. Once a committed powerlifter, spending upwards of 80 minutes a day in the gym, he was forced to overhaul his approach due to fatherhood, lockdown and a schedule that no longer allowed for long, structured lifting sessions.
‘Even though I was putting in hours and hours into the gym and even though my physique was pretty good, I wasn’t becoming truly excellent at any physical discipline,’ he explained in a YouTube video.
‘I loved the intentionality of training,’ says Edwards. ‘The fact that every session has a point, every rep in every set is helping you get towards a training goal, and I loved that there was a clear way of gauging progression – feeling like I was developing competence and moving towards mastery.’
Why He Walked Away From Powerlifting
Despite that structure, Edwards began to question whether powerlifting was sustainable long-term.
‘My sessions were very taxing on my central nervous system. I was exhausted between sessions. It felt as if I needed at least nine hours of sleep each night just to function.’
He also noted that his appetite was consistently high.
But the biggest drawback was time.
‘I could not justify taking 80 minutes a day away from my family for what felt like a self-centred pursuit,’ he says.
A Simpler Approach That Stuck
‘Over the course of that year I fixed my relationship with alcohol and I developed, for the first time in my adult life, a relationship with physical training,’ says Edwards.
With limited time and no access to equipment, he turned to burpees. Just two variations, four times a week, with each session lasting 20 minutes.
‘My approach in each workout was very simple. On a six-count training day I would do as many six-counts as I possibly could within 20 minutes. On a Navy Seal training day I would do as many Navy Seal burpees as I could within 20 minutes – then in the next workout I would simply try to beat the number I had managed previously.’
This style of training is known as AMRAP – as many reps (or rounds) as possible.
The Results
Edwards initially saw the routine as nothing more than a six-month stopgap to stay in shape. But that quickly changed.
‘I remember catching sight of myself in the mirror one morning and I was utterly baffled by the man I saw looking back at me.’
He found himself in the best shape of his life. His energy levels improved, his resting heart rate dropped and his physique changed in ways that powerlifting hadn’t quite delivered.
‘It has been five years since I have set foot in a gym,’ he says. ‘That six-month training practice has become the defining training practice of my life – and for five years I have trained for no more than 80 minutes per week.’
The Burpee Workouts
1/ 6-Count Burpees
20-minute AMRAP, twice a week
How to do them:
- Start standing, feet shoulder-width apart
- Crouch down and place your hands on the floor (count 1)
- Jump your feet back into a high plank (count 2)
- Lower into the bottom of a push-up (count 3)
- Push back up to plank (count 4)
- Jump your feet forward to your hands (count 5)
- Stand up straight (count 6)
20-minute AMRAP, twice a week
How to do them:
- Start standing, feet shoulder-width apart
- Crouch down and place your hands on the floor
- Jump your feet back into a high plank
- Perform a push-up (chest to floor)
- At the top, bring your right knee to your right elbow, then return
- Perform another push-up
- Bring your left knee to your left elbow, then return
- Perform a third push-up
- Jump your feet forward
- Stand or jump to finish
Kate is a fitness writer for Men’s Health UK where she contributes regular workouts, training tips and nutrition guides. She has a post graduate diploma in Sports Performance Nutrition and before joining Men’s Health she was a nutritionist, fitness writer and personal trainer with over 5k hours coaching on the gym floor. Kate has a keen interest in volunteering for animal shelters and when she isn’t lifting weights in her garden, she can be found walking her rescue dog.
Fitness
Six ways your smartwatch is lying to you, according to science
You check your smartwatch after a run. Your fitness score has dropped. You’ve burnt hardly any calories. Your recovery score is really low. It’s telling you to take the next 72 hours off exercise.
The worst bit? The whole run felt amazing.
So why is your watch telling you the opposite?
Ultimately, it’s because smartwatches and other fitness trackers aren’t always accurate.
Smartwatches can shape how you exercise
Using wearable fitness technology, such as smartwatches, has been one of the top fitness trends for close to a decade. Millions of people around the world use them daily.
These devices shape how people think about health and exercise. For example, they provide data about how many calories you’ve burnt, how fit you are, how recovered you are after exercise, and whether you’re ready to exercise again.
But your smartwatch doesn’t measure most of these metrics directly. Instead, many common metrics are estimates. In other words, they’re not as accurate as you might think.
1. Calories burned
Calorie tracking is one of the most popular features on smartwatches. However, the accuracy leaves a lot to be desired.
Wearable devices can under- or overestimate energy expenditure (often expressed as calories burned) by more than 20 per cent. These errors also vary between activities. For example, strength training, cycling and high-intensity interval training can lead to even larger errors.
This matters because people often use these numbers to guide how much they eat.
For example, if your watch overestimates calories burned, you might think you need to eat more food than you really need, which could result in weight gain. Conversely, if your watch underestimates calories burned, it could lead you to under-eat, negatively impacting your exercise performance.
2. Step counts
Step counts are a great way to measure general physical activity, but wearables don’t capture them perfectly.
Smartwatches can under-count steps by about 10 per cent under normal exercise conditions. Activities such as pushing a pram, carrying weights, or walking with limited arm swing likely make step counts less accurate, as smartwatches rely on arm movement to register steps.
For most people, this isn’t a major problem, and step counts are still useful for tracking general activity levels. But view them as a guide, rather than a precise measure.
3. Heart rate
Smartwatches estimate your heart rate using sensors that measure changes in blood flow through the veins in your wrist.
This method is accurate at rest or low intensities, but gets less accurate as you increase exercise intensity.
Arm movement, sweat, skin tone and how tightly you wear the watch can also impact the heart rate measure it spits out. This means the accuracy can vary between people.
This can be problematic for people who use heart rate zones to guide their training, as small errors can lead to training at the wrong intensity.
4. Sleep tracking
Almost every smartwatch on the market gives you a “sleep score” and breaks your night into stages of light, deep and REM sleep.
The gold standard for measuring sleep is polysomnography. This is a lab-based test that records brain activity. But smartwatches estimate sleep using movement and heart rate.
This means they can detect when you’re asleep or awake reasonably well. But they are much less accurate at identifying sleep stages.
So even if your watch says you had “poor deep sleep”, this may not be the case.
5. Recovery scores
Most smartwatches track heart rate variability and use this, with your sleep score, to create a “readiness” or “recovery” score.
Heart rate variability reflects how your body responds to stress. In the lab it is measured using an electrocardiogram. But smartwatches estimate it using wrist-based sensors, which are much more prone to measurement errors.
This means most recovery metrics are based on two inaccurate measures (heart rate variability and sleep quality). This results in a metric that may not meaningfully reflect your recovery.
As a result, if your watch says you’re not recovered, you might skip training — even if you feel good (and are actually good to go).
6. VO₂max
Most devices estimate your VO₂max — which indicates your maximal fitness. It’s the maximum amount of oxygen your body can use during exercise.
The best way to measure VO₂max involves wearing a mask to analyse the amount of oxygen you breathe in and out, to determine how much oxygen you’re using to create energy.
But your watch cannot measure oxygen use. It estimates it based on your heart rate and movement.
But smartwatches tend to overestimate VO₂max in less active people and underestimate VO₂max in fitter ones.
This means the number on your watch may not reflect your true fitness.
What should you do?
While the data from your smartwatch is prone to errors, that doesn’t mean it is completely worthless.
These devices still offer a way to help you track general trends over time, but you should not pay attention to daily fluctuations or specific numbers.
It’s also important you pay attention to how you feel, how you perform and how you recover. This is likely to give you even more insight than what your smartwatch says.
Hunter Bennett is a lecturer in exercise science at Adelaide University. This piece first appeared on The Conversation.
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