Fitness
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.
“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.
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?
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
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.”
Fitness
From Lifespan to ‘Health-span’: Use the New Year to Focus on Both Health and Fitness
Fitness encompasses cardiovascular endurance, strength training, and mobility/flexibility. These are non-negotiables for continuing to live throughout your later years with your independence and ability to move and socialize still intact.
Instead of thinking simply about living longer, let’s use the start of a new year to focus on getting healthier, so we live better. More than any other time each year, the New Year is a popular time to focus on a “fresh start.” Temporal landmarks like New Year’s Day, Mondays, birthdays and the change of seasons are standard starting lines for many of us when we have a goal to work toward and bad habits to break.
Science Says Fitness Matters (Even More than Weight)
A recent study published in the British Journal of Medicine, Cardiorespiratory Fitness, BMI, and Mortality: A Systematic Review and Meta-Analysis, shows that, regardless of body weight (obese, overweight or normal), fitness matters more for all-cause mortality. They measured the weight, BMI and fitness of six groups: normal weight-fit; normal weight-unfit; overweight-fit; overweight-unfit; obese-fit; and obese-unfit.
The analyses revealed that individuals classified as fit, regardless of their BMI, did not have a statistically significantly higher risk of cardiovascular disease or all-cause mortality compared to normal weight-fit people. At the same time, all unfit groups across different BMI categories exhibited a two- to threefold higher risk of cardiovascular disease and all-cause mortality compared to their regular weight-fit counterparts.
About Body Mass Index (BMI)
Now, you may be saying, “But BMI is flawed!” Sure. BMI is not the best indicator for distinguishing normal weight, overweight and obesity because it is simply a height-to-weight ratio that does not account for differences in body fat/muscle composition, age, sex or other factors. Before you discredit this entire study because of the BMI issue, remember that it measured fitness levels among people of different sizes. Some had more muscle and were considered fit in the overweight/obese group, while others were deemed unfit in the normal weight group. Still, BMI helps place people of differing sizes (height and weight groups) and focuses on measuring each group’s fitness. In the end, fitness matters more than BMI, so the goal is to exercise, get in shape, build muscle and lose fat.
Set Your Training Goals to Be Long-Term
It is fine to have short-term, specific training goals, such as strength gains and endurance times, or weight gain or weight loss. However, start this year with a 10-year fitness focus, as what you do in your 40s-50s will determine how you live in your 60s-70s. Always think 10 years ahead, no matter what your age, because what you gain today and maintain tomorrow is needed to continue to live independently for a few more generations in your family’s lineage. You can focus on longevity and optimal performance for your fitness and health goals at the same time by maintaining a consistent activity level and healthful nutrition, sleep and recovery.
Try This Goal: Make Annual Physical and Blood Screening Appointments
If you have not been to a doctor in a while, set an appointment in January, and get into the habit of annual health and wellness screenings. Treat annual physicals with the doctor as opportunities to PR (personal record) common blood work results, such as cholesterol, triglycerides, blood sugar, body weight and blood pressure. These are just the basics to help you assess how to adjust your sleep, nutrition, physical activity and stress management. These meetings are also quite satisfying when you achieve solid results that show health and wellness.
Don’t Give Up
While a large portion of us (nearly half of Americans) will create a New Year’s resolution, only about 9%-10% will achieve their goals. After a stressful holiday season, we are typically burned out in January. This may not be the best time to start a lifestyle change, complete with quitting bad habits (over-eating, smoking, drinking) and starting new healthy habits (gym membership, diet, etc.).
Instead, use the first few weeks of January to focus on stress mitigation and recovery. This should include building easy habits of walking every day, stretching, taking deep breaths and simply not overeating. This is a great way to move into a new fitness focus. Then, when feeling back to normal, focus a little harder, with more intensity, duration of training, and specificity to your fitness and health goals.
There are many ways to expand your “health-span.” Check out these options and get consistent with any or all of them:
Final Advice
If you want to get started on a focused health and wellness goal of being able to do physical activities, stay social and be independent, start with the basics of walking and stretching daily for a month. The following month, add calisthenics such as squats, lunges, push-ups and the plank pose. The following month, add weights such as dumbbells or kettlebells, or suspension trainers such as the TRX.
This steady progression helps you ease into fitness habits gently and adds a new component each month to keep it interesting. To achieve results with lifelong wellness goals, you need to keep endurance, strength and mobility/flexibility as primary focuses. Stability, durability, balance, speed and agility can also be developed once you have built the foundation. This is the beauty of long-term goals. Focus on doing something each day, being disciplined about eating and drinking healthfully, and learning stress-mitigation techniques such as breathing to take into your next decade on this planet.
There are dozens of these types of articles at the Military.com Fitness Section. Check them out for ideas on specific ways to train.
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Fitness
Exercise ‘snacks’ can keep your fitness on track when time is tight – try these 3 today
December is great for many things – socialising, scoffing, falling out with relatives – but sticking to a training schedule is not one of them.
Heading out the door on Christmas morning for a two-hour long run is likely to put anyone on the naughty list, while it takes a dedicated runner indeed to spend part of the festive period running loops of the track.
What the mere mortal needs is exercise “snacks”. These can be enjoyed/endured alongside the carb-based variety and snuck in to even the busiest Christmas schedule.
A review in Sports Medicine and Health Research confirmed that regular, short bursts of physical activity throughout the day improved cardiovascular respiratory fitness, increased fat oxidation and polished off blood sugar levels after eating.
Vigorous intermittent exercises, such as sprints, were good for building muscle strength. Meanwhile, 10-minute resistance training sessions were found to be particularly beneficial to older people. The researchers concluded that exercise snacks could be a viable alternative to longer, less frequent sessions.
Cram in vigorous bouts of stair climbing for muscle strength, or one or two sub-10 minute morsels for muscle growth as an efficient alternative to meatier long sessions. Here’s some inspo below…
3 exercise snacks to gorge on
Try these simple workouts for results on the quick
For upper-body
Press-ups: 3 x 20 with a 30-sec rest between (b/w) reps
Bench dips: 3 x 15 with a 30-sec rest b/w reps
For lower-body
Bodyweight squats: 3 x 20 with 20-sec rest b/w reps
Wall sit: 2 x 90 secs with 1-min rest b/w reps
For cardio fitness
Burpees: 3 x 20 with 30-sec rest b/w reps
Skipping: 4mins consisting of 1min normal, 1min high knees, 1min normal, 1min high knees
Fitness
Study shows the antioxidants in this tea improve exercise recovery
I love many different herbal teas just as much as I enjoy a good old-fashioned British cup of PG tips, Earl Grey, or Glengettie — a Welsh favorite from the rolling valleys where I was born. In an interesting study, researchers explored whether drinking green or matcha tea can improve sports performance and exercise recovery, and the results might have you reaching for a vibrant green drink. If you want to get straight to the results, the short answer is that drinking green and matcha tea can support hydration, body fat control, and exercise recovery. Still, it definitely won’t be a game-changer when it comes to your performance in the gym, on the court, or on the field.
Hydrating with tea
In a study published in Nutrition and Food Technology, researchers reviewed existing studies of athletes and active adults that focused solely on drinking tea — no pills or extracts. They revealed that green or matcha tea can help hydrate the body when consumed in normal amounts. Tea counts toward your daily water intake.
Antioxidants and recovery

The research highlighted how the widely-studied antioxidants in green and matcha tea can improve exercise recovery and help protect your cells from the stress associated with intense exercise. That said, the research shows that drinking tea won’t lead to faster or better strength gains, so it’s no silver bullet for helping you achieve your fitness goals. However, they also concluded that low-caffeine green tea could even improve sleep quality, which I would argue could potentially help you power through that workout if you’re getting better sleep the night before.
Linked to lower body fat

Interestingly, the study authors also concluded that drinking around two or three cups of green or matcha tea per day was associated with slightly lower body fat and improved body composition and fat burning. While the effects weren’t overly significant, they were noted in the research. Cup of tea, anyone?
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