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The worst time to exercise for a good night’s sleep

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The worst time to exercise for a good night’s sleep

Need a good night’s sleep? Cut back on exercising in the evening.
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If you’d like to sleep well tonight, you should probably avoid exercising this evening, especially if your workout will be intense.

That’s the takeaway from a new study of almost 15,000 active men and women. It found that exercising within about four hours of bedtime makes it harder to fall asleep and reduces how long you spend slumbering by as much as 43 minutes.

The effects were most pronounced when workouts were long, intense or both, but almost any evening exercise influenced how well people slept.

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“I do my best now to avoid exercising late in the evening,” said Josh Leota, a researcher at Monash University in Australia, who led the new study.

But there may be ways to minimize the effects if evening happens to be the only time you can — or care to — work out.

The link between exercise and sleep

For decades, researchers have been puzzled by the relationship between sleep and exercise. According to most past research, active people sleep better than the sedentary, but not always. Some studies suggest morning workouts improve sleep, while later workouts don’t, but others seem to show any movement, at any time, helps people nod off earlier.

Most of these studies have been quite small, though, often involving fewer than 20 volunteers, and relied on people’s memories of when and how they worked out and snoozed.

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So for the new study, published in April in Nature Communications, researchers at Monash teamed up with the activity-tracker maker Whoop to parse anonymized data from 14,689 men and women aged 18 to 87 who’d worn a Whoop tracker for at least a year. (Whoop provided access to the data but “did not have any input into the analysis or results,” Leota said.)

The records included extensive details about when and how intensely people exercised every day, based on their heart rates, and also how well they’d slept that night, including when they’d nodded off, how long they’d remained asleep and the overall quality of their slumber.

36 extra minutes to fall asleep

The researchers were interested in how late-day exercise changes sleep — since previous studies had so often disagreed with one another. They first categorized people’s workouts as light, moderate, hard or maximal, corresponding, in broad terms, to a brisk walk, easy jog, long run or prolonged high-intensity interval training. They also took note of when people worked out and mapped their sleep.

Then they cross-checked. Did people sleep better or worse after they worked out close to bedtime? What if the exercise was gentle? What if they pushed themselves?

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The answers consistently showed that “later exercise timing and higher exercise strain” were each strongly linked to worse sleep, the scientists wrote in the study. Even relatively modest evening workouts, such as light weight training or a gentle gym class, could somewhat disrupt sleep.

But the impacts intensified along with the intensity. If people ran an after-hours half-marathon or played a rousing late-night soccer, hockey or basketball game within about two hours of their usual bedtime, they needed an average of 36 extra minutes to fall asleep.

Finish that same strenuous exercise even later at night, after someone’s usual bedtime by an hour or two, and he or she would need an extra 80 minutes to doze off.

People also slept less, in total, after hard, evening exercise, and the quality of their sleep declined, with frequent waking, tossing and turning.

How to wind down after a late workout

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The researchers didn’t look at why this happens, but they suspect people were too wound up, physiologically. Participants’ tracker data showed their heart rates were still elevated hours after strenuous evening exercise, while, at the same time, their heart rate variability, which should be somewhat high, remained stubbornly low.

In essence, Leota, said, people got too pumped up by vigorous, late-night workouts to easily drift off or stay asleep. “A basic rule of thumb,” he said, “is the harder you work out, the more time you need to give yourself to recover before going to sleep.”

If you do need to exercise late in the evening, you might want to try meditation, gentle yoga or other relaxation techniques afterward to calm your revved-up body, Leota said.

Even better, “if you can exercise earlier in the day, that would be preferable,” he said.

But if the evening is your best option, stick with it. “We are definitely not discouraging exercise,” Leota said. “For the vast majority of people, any exercise is better than no exercise. We would just recommend trying to finish as early as possible or opting for lighter workouts.”

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I tried the 10-minute mobility workout a strength trainer has been doing for over 20 years—here’s why I’ll be making it a permanent fixture in my training program

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I tried the 10-minute mobility workout a strength trainer has been doing for over 20 years—here’s why I’ll be making it a permanent fixture in my training program

I don’t normally do mobility workouts. Instead, I focus on my running and strength training programs.

But mobility work shouldn’t be an optional extra. It’s something all of us would benefit from doing.

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Maintaining an exercise regimen benefits my husband with hemophilia

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Maintaining an exercise regimen benefits my husband with hemophilia

My husband, Jared, first set foot in a gym just months into our relationship. It wasn’t some grand fitness decision — just curiosity. What would it feel like to work out? That question led us to a small, hole-in-the-wall bakal gym near his university — a Filipino term for a no-frills neighborhood gym, often pieced together with improvised machines, rusted plates, and years of wear and tear. We kept going back anyway.

What started as something casual became a rhythm we carried through his college years, then into our home, and eventually into our marriage. Even during my pregnancy — against popular opinion — I kept showing up alongside him.

But for Jared, it wasn’t just about aesthetics, routine, or even discipline. It was about necessity.

Living with hemophilia means learning early on that your body has limits. Joints can be vulnerable in ways other people don’t have to think about. Injuries don’t always resolve quickly or cleanly. And even with treatment, there’s still a quiet responsibility to take care of your body in a way that reduces risk where possible.

For Jared, the gym became one way of doing that. Not to “fix” his condition, but to support his body so it could carry him through everyday life. Stronger muscles meant more stability around his joints, more control over how he moved, and fewer moments of uncertainty.

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Working out wasn’t about pushing past his condition. It was about working with it.

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When stopping feels like the easier choice

So when Jared burned his hand earlier this year, it would have been easy — understandable, even — to stop. It would’ve seemed logical to wait until things felt normal again (if they ever would).

But recovery didn’t look like rest. It took the form of occupational therapy sessions that left him screaming and writhing in pain behind closed doors. The goal was to make the burned skin flexible again, reduce contractures, flatten keloids, and restore as much movement as possible. It wasn’t a process anyone would describe as gentle.

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In many ways, that alone was already more demanding than any workout he’d done before.

And when he was discharged from the hospital in January, the effects of disuse were hard to ignore. His right wrist — normally thick and strong — had visibly shrunken. The muscle loss was immediate, almost startling.

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So he started small. Basic movements with 3-pound dumbbells. In those early days, even holding the weight was a struggle. His grip strength was virtually nonexistent. But he kept going.

Nearly five months later, things look different. He’s back to following full-body workouts on YouTube. His movements are steadier and stronger. And little by little, the strength has come back. These days, he can curl 12-pound dumbbells with his burned and contracted hand — something that would have felt out of reach not too long ago.

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Not starting from zero

I’ve realized over time that hemophilia, for Jared, isn’t something that takes him out of the equation. If anything, it demands that he stay in it.

There’s a kind of structure that comes with knowing your body has limits. You pay attention differently. You learn what works and what doesn’t. You don’t always have the luxury of being careless — so you become deliberate instead.

And in that way, movement becomes less about motivation and more about maintenance. Less about aesthetics and more about function.

The burn injury could have interrupted that. In some ways, it did. But it didn’t erase the foundation he had already built. If anything, it made it clearer why that foundation mattered in the first place.

Because when something does go wrong — when there’s an injury, a setback, a moment when your body doesn’t cooperate — you’re not starting from zero. You’re working from something that’s already there.

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That doesn’t make it easy. But it does mean he never has to start from nothing.


Note: Hemophilia News Today is strictly a news and information website about the disease. It does not provide medical advice, diagnosis, or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or another qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. The opinions expressed in this column are not those of Hemophilia News Today or its parent company, Bionews, and are intended to spark discussion about issues pertaining to hemophilia.

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Did you know you can start building strong glutes without any equipment? An expert trainer explains how

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Did you know you can start building strong glutes without any equipment? An expert trainer explains how

No offense to all the hearts out there, but the glutes are the body’s engine.

They propel you forward when you walk or run, and come into play during the majority of your daily movements.

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