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Figuring out the best time to exercise

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Figuring out the best time to exercise

It’s a long-standing discussion for all who want to get into shape: When is the best time to exercise?

Based on member data from American fitness company Future, about 41% of workouts take place between 7-9am or 5-7pm.

“The debate is intriguing with proponents of both morning and evening workouts citing various benefits,” says sports medicine research director Dr Andrew Jagim from the Mayo Clinic Health System in Wisconsin, United States.

“From increased energy levels to enhanced performance or greater weight-loss benefits, health experts delve into the science behind exercise timing to shed light on the optimal approach for achieving fitness goals.”

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In the morning

For morning exercisers, the allure of starting the day with a workout is undeniable.

“Getting your workout in and completed before you even begin your day can provide a sense of accomplishment and set a positive tone for the day ahead,” explains Dr Jagim.

“The post-workout release of endorphins and the satisfaction of accomplishing something before 9am can serve as a powerful ego boost.”

Perhaps most importantly, morning workouts eliminate the need to worry about finding time for exercise later in the day.

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This is as it’s often the only time of the day that hasn’t been previously committed to work, social events or family activities.

“By completing your workout in the morning, you free up your afternoons and evenings for other activities, such as cooking dinner, socialising or simply relaxing,” Dr Jagim notes.

“This sense of freedom and flexibility can alleviate stress and enhance overall well- being.”

For people embarking on morning workouts, strategic pre-exercise nutrition can make a significant difference in energy levels and performance.

“Starting the day with a balanced breakfast containing carbohydrates, protein and healthy fats can provide the necessary energy to power through a morning workout,” he advises.

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“Opt for wholegrain cereals, Greek yoghurt with fruit, and allow sufficient time for digestion to prevent discomfort and optimize nutrient absorption.

“Or, if you’re not hungry in the mornings or don’t have time, something simple like an energy bar can suffice.”

In the evening

However, for some people, waking up early to exercise is the last thing they feel like doing, and therefore, the case for evening workouts is more appealing.

“Your body’s ability to perform peaks in the afternoon and early evening, with optimal muscle function, strength and endurance,” states osteopathic medicine practitioner Jake Erickson, who specialises in sports medicine at the Mayo Clinic Health System in Onalaska, Wisconsin.

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“During this time, your body has time to wake up a bit by moving around throughout the day, you’ve likely gotten a meal or two in to ensure adequate energy available to use during the workout, and you may be more mentally alert.”

Additionally, oxygen uptake kinetics are more favourable in the evening, allowing for more efficient utilisation of resources during exercise.

“Your body is primed for performance in the late afternoon and early evening, making it an ideal window for high-intensity activities like interval training or speed work,” he explains.

Conversely, people opting for evening workouts face unique considerations in balancing time commitments and mental energy.

“After a long day at work or shuttling around the kids all day, it can be hard to muster the motivation to go to the gym and put forth a lot of physical effort during a workout,” says osteopathic medicine practitioner Alecia Gende, who specialises in sports medicine and emergency medicine at Onalaska’s Mayo Clinic Health System.

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“Additionally, intense physical activity in the evening may trigger a stress response and cause difficulty falling asleep or waking in the middle of the night if your cortisol is disrupted and released at an inopportune time.

“If you have to get a workout in before sleep, it would be best to be lower intensity, such as a walk or lighter (weight-)lifting session.

“If that’s the case, moving the workout earlier in the day might be more beneficial for them.”

Lastly, if you choose to work out later in the day, it’s important to ensure that you are getting adequate nutrients throughout the day to make sure you have enough fuel available to support the workout, in addition to eating a well-balanced meal after the workout.

“After a long day, it’s essential to refuel the body with carbohydrates and protein,” Dr Jagim says.

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“Consuming a nutrient-rich meal within two hours of your workout can facilitate muscle recovery and enhance adaptation to training.

“Consider options such as grilled chicken with quinoa and vegetables, or a protein-packed stir-fry to refuel and replenish after an evening workout.”

For people engaging in prolonged or intense exercise sessions (more than 90 minutes), mid-workout nutrition can play a pivotal role in sustaining energy levels and preventing fatigue.

He recommends incorporating carbohydrate-rich snacks during extended workouts to maintain endurance and performance.

At midday

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Whether working or at home, most people hit the dreaded afternoon slump around 3pm.

A study of more than 90,000 people recently found that working out in the afternoon reduces the risk of heart disease or early death more than physical activity in either the morning or afternoon.

The benefits of afternoon exercise for longevity were most pronounced for men and the elderly.

“Morning workouts may not be ideal for shift workers, or those working late or staying up later in the evening,” says Gende.

“In that case, it may be more prudent to allow more sleep in the morning and perform a mid-day workout or early afternoon workout before your next evening shift or late night.”

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According to a OnePoll survey, the most effective activity for people during an afternoon workout is getting up and going for a walk, which is a great way to perk up both your mind and body.

Find your right time

So, what is the best time to exercise?

For those who just say I don’t have any time available, there’s always time.

“I suggest scheduling a ‘snack competing’ activity,” says Erickson.

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“This can be a good excuse to flip the script, and for people who know they may choose to sit on the couch and snack in the evenings.

“They can use that time to grab a workout of some kind instead.

“This can lead to a big swing in people’s fitness as they consume less calories by avoiding the typical snacking time and burn more calories by the workout.”

There are even benefits to splitting up a workout into short 10-minute mini-sessions throughout the day if you don’t have time to get a full 60-minute session in.

ALSO READ: Always busy? Try stacking short workouts throughout your day

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One thing is clear; even though science may seem contradictory, the importance of regular physical activity cannot be overstated.

“Ultimately, the best time to exercise is the time that fits into your schedule and aligns with your energy levels and preferences,” says Dr Jagim.

“Consistency and adherence to a regular exercise routine are key, and far more important, regardless of the time of day you choose to work out.

“Any time of day is better than no exercise in reducing the risk of death from any cause, including from heart disease and cancer specifically.

“Experimentation and self-awareness are essential in determining the ideal timing toward optimising exercise performance, recovery and overall well-being.” – By Rick Thiesse/Mayo Clinic News Network/Tribune News Service

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I’ve been doing the bird dog exercise instead of planks to improve my core strength – it’s even better for beginners

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I’ve been doing the bird dog exercise instead of planks to improve my core strength – it’s even better for beginners

While the bird dog exercise mainly works the core muscles, improving stability and strength, it also targets the lower back, shoulders, hamstrings, and glutes, making it one of the better full-body exercises you can do.

Over the years, I’ve done plank after plank and seen few benefits. It’s just not the exercise for me. I can hold the position for about a minute before everything starts shaking and my forehead starts sweating. Even with practice, it feels torturous.

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Boutique Fitness Is Redefining How Americans Work Out. Which Drop-In Classes Are Worth Booking?

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Boutique Fitness Is Redefining How Americans Work Out. Which Drop-In Classes Are Worth Booking?


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Boutique Fitness Is Redefining How Americans Work Out




















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I pushed myself too hard at the gym – and ended up in the hospital

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I pushed myself too hard at the gym – and ended up in the hospital

In January 2025, I attended my first bootcamp class.

I had spent the day hunched over my laptop, anxious and craving an intense workout that would dispel my worries. I booked the class at a nearby gym, and the five-star reviews promised the all-consuming exercise I wanted: “Militant style instructor, but very motivating,” read one. Another: “Hardest workout of my life; extremely rewarding.”

The gym was no-frills – just a room with a mirror. After a standard warm-up, we did four sets of lateral shuffle push-ups across the floor, interspersed with standing, weight-bearing exercises.

When my turn came, I dropped to plank position and started doing steady, shallow reps, focusing on my form.

But caution soon fell away. Upbeat music was booming and someone was always advancing beside me. When the instructor encouraged us to lower all the way down, I obeyed, even though my form suffered. I had rarely done more than a handful of pushups at a time, and in the final set, I was exhausted, collapsing on every rep and barely prying my torso off the floor.

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The rest of class was a blur. I became nauseated, told the instructor I needed to pause, and stepped outside to suck cold winter air into my lungs.

Back in the studio, I sat on the sidelines and waited for the dizziness to recede before slinking to my spot for the core section and cooldown.

Later that night, I felt what I thought was typical post-workout muscle soreness. I was satisfied; the ache was proof of a successful workout.

But the next day, lifting my arms to wash my face was exhausting. Searing pain kept me awake that night. Two days after the class, my arms were so stiff I couldn’t raise them more than a few inches, even to brush my teeth.

When I Googled my symptoms – pain, weakness and a new one, dark urine – something frightening came up: exertional rhabdomyolysis, a condition wherein extreme exercise causes muscle cell contents to flood the bloodstream, potentially overwhelming the kidneys. One article warned that debilitating pain after a new, intense activity was a sign to visit the emergency room.

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I went to the ER but suspected I was overreacting. After all, the internet always offers the worst possibility.

Doctors use bloodwork to test for exertional rhabdomyolysis; typically, they diagnose it if a patient has too much of a muscle enzyme called creatine kinase (CK) in their blood – at least 1,000 units per liter, or five times the normal range. However, there is little consensus on this number, says Dr Barry Boden, an orthopaedic surgeon at The Orthopaedic Center in Maryland, who specializes in sports medicine. Some recent guidelines suggest that only higher amounts – as much as 10,000 units – warrant diagnosis and inpatient treatment.

My CK count was so high the machine in the emergency room couldn’t measure it; a nurse had to do a second blood draw and send it to a more precise lab. They put me on an IV drip and eventually reported the exact number: 57,000.

Thus began my seven-day hospital stay. My mom and sister traded shifts, acting as my arms for the week – scrubbing my teeth, feeding me, washing my face. I had never felt so helpless and irresponsible. What had I done to myself?

What is exertional rhabdomyolysis?

Normally, during exercise, muscles tear a little and then rebuild. There may be a little extra CK in a person’s blood as a result, which healthy kidneys can filter out.

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But excessive exercise can harm muscle cells so much that their contents – including CK and a protein called myoglobin – overload the system. “When the cell membrane starts to break down, the chemicals within the muscle cells start to get released, which can cause damage to other organs around the body,” said Boden. “ If there’s enough of those chemicals from the muscle that reach the kidney, it can cause damage to the kidney.”

The symptoms are muscle pain (even while at rest), weakness and dark urine, though few people experience all three. Treatment involves early and aggressive administration of IV fluids to help the kidneys filter the toxins. It’s possible to manage a mild case with at-home oral hydration, but it’s always important to consult a doctor because mild symptoms don’t always mean low CK elevation, said Dr Petr Schlegel, a CrossFit trainer and professor at the department of physical education and sports at the University of Hradec Králové in the Czech Republic.

Exertional rhabdomyolysis is dangerous and fatal in very rare cases; researchers estimate that 10% of patients develop acute kidney injury (AKI), and some suffer other serious complications.

How common is exertional rhabdomyolysis?

Before I had rhabdomyolysis, I had never heard of it; I thought the worst that could come from a workout was a broken bone or a regurgitated lunch. I now know it can happen to anyone, although people with certain conditions, such as sickle-cell trait and hypokalemia, are predisposed. Despite the common misconception that only unfit people can get it, even elite athletes are susceptible.

 “Anybody can get it – anybody that’s pushed to an extreme, taking a big jump in their exercise level, or doing something they’re not used to doing,” said Boden. “Everybody has muscles, and if the muscles are damaged enough, you can develop rhabdomyolysis.”

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Boden authored a study estimating there were over 40,000 exertional rhabdomyolysis cases in US hospitals from 2000 to 2019. But he said it’s impossible to get a precise count, as no organization collects the data.

This number is likely an underestimate, as the condition is probably under-reported, said Schlegel. Since the symptoms closely resemble those of delayed onset muscle soreness – the normal ache people expect after a workout – individuals may not seek care.

Data indicate exertional rhabdomyolysis is on the rise. In Norway, Australia and the US, researchers have observed an increase in hospital records between the 2000s and 2010s. This year, hospitals in a Canadian province reported a surge in cases.

Researchers suspect the popularity of high-intensity workouts is behind the rise. They are efficient and produce measurable progress, but are risky if misused, said Schlegel: “Evidence suggests that high-intensity exercise, especially when combining strength and endurance elements, carries the greatest potential to induce [exertional rhabdomyolysis].”

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Can you prevent exertional rhabdomyolysis?

Prevention guidance has been pretty consistent since the earliest studies from the 1960s: vary exercises to avoid overloading one muscle group, incorporate rest, and gradually build intensity when starting something new or after time off.

Starting low is especially important when targeting large muscle groups – such as biceps, triceps and quads. “It’s that hyperintense going from zero to 100, really intense workouts of large muscle groups, that puts people at risk,” said Dr Bryant Walrod, a sports medicine physician and the head team physician for the Ohio State Buckeyes. Weight matters, but so do reps; an outrageous number of low-weight exercises or calisthenics – hundreds of pushups or squats, for example – is the trigger in many cases. Walrod also advises doing a different kind of workout from one day to the next.

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Eccentric exercises like push-ups – where muscles lengthen – are particularly likely to cause injury. In a 2024 article about how to prevent rhabdomyolysis in student athletes, the National Federation of State High School Associations called push-ups the “No 1 cause” of rhabdomyolysis. In April, Texas families filed a lawsuit against a charter school after 20 children were hospitalized after hundreds of pushups.

Walrod said collegiate sports professionals became more vigilant about prevention after University of Iowa football players were hospitalized with exertional rhabdomyolysis in 2011. “That case spurred better control of workouts, better monitoring, and better input from the trainers and strength coaches.”

“Where we see most of the cases is that athletes are being pushed or threatened or punished [contrary to industry standards],” said Dr Rebecca Stearns, COO at the Korey Stringer Institute for preventing sudden death in sports. Coaches are not exercise physiologists, and even when well-intentioned may not have adequate training to prevent overexertion, said Boden.

Similarly, there’s no guarantee fitness instructors understand the risk. “People may be going in unconditioned and doing too much too soon,” said Walrod of these classes. CrossFit incorporated prevention into its trainer curriculum after reports of severe cases among participants, but in general, class participants should self-monitor.

How do you identify overexertion?

I was discharged from the hospital with a firm instruction: no exercise except walking for a month. I had to learn what an appropriate challenge felt like – how to self-monitor, discern between safe discomfort and overexertion, and advocate for myself. But when is hard too hard?

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Unfortunately, sensing that something is wrong is a subjective measure; there is no universal metric.

“I never have a very satisfying answer to that, but I do think it’s a line we need to be vigilant about always, and it changes from day to day,” said Dr Natalia Petrzela, author of Fit Nation: The Gains and Pains of America’s Exercise Obsession, longtime fitness instructor, and professor of history at The New School.

“You know your body the best, and if you feel like something isn’t right, it’s time to speak up,” said Walrod. Sports medicine physicians advise people to stop exercise immediately if unusual pain occurs; in the event that there is excessive muscle breakdown, it’s critical to stop the movement right away.

Speaking up in a class setting can be difficult. Many feel self-conscious about pausing or modifying activity, especially if an instructor is singling them out. Petrzela said that she motivates participants in her class but also expresses a key caveat: “Only you know what you can do today.” She said this language “helps [them] find that very important and difficult-to-discern line”, adding that this nuance might get lost in classes with less experienced instructors who give inflexible instructions.


During that fateful class, I ignored the alarm bells. Maybe I was desperately chasing endorphins or wanted to prove to myself that I wasn’t weak. Ironically, my arms atrophied to below baseline as a result.

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Over a year later, I’m still building my strength back – but not at bootcamp. I opt for low-impact methods such as barre and pilates where I can modify if needed, and there is no need to keep pace with others.

Sometimes I tell instructors about my medical history, so they understand what’s happening if I pause. Verbalizing it also reminds me to be careful. Finally, I avoid anything new or especially difficult when I’m having a hard day.

Fitness culture taught me that pain is gain – but now I know that’s not always true.

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