The fitter you get, the more likely you are to feel that you can’t get enough oxygen during hard exercise

They both have benefits. Here’s how to use them to feel and perform better.

This is the race women runners have been waiting for

Contrary to what scientists once thought, even superficial cooling is enough to interfere with muscle oxygen supply.

Schools have been measuring kids’ fitness for decades, using now-controversial metrics like body mass index. California thinks there’s a better way.

The 1,000 Hours Outside challenge wants to encourage kids to spend more time outside. But what about those of us who don’t have easy access to nature? 

Not as soundly as you’d expect, actually

Short workouts can make you stronger, but longer workouts are better for building muscle, according to new research

After being diagnosed with postural orthostatic tachycardia syndrome (POTS), I wondered what was possible for my body

Look around the start line of an endurance race and you don’t see many tall competitors. Look on the podium, and you never see any. Why is that?

Avalanche victims need to be located as quickly as possible. But a newly published case report shows that occasionally, someone beats the odds.

The benefits of training your mental skills are, by definition, all in your head. So how do we prove that it works?

In her new book, ‘Mind Game,’ Julie Kliegman offers a wide-ranging look at the inner struggles of sports stars and also-rans

The quest for adequate support can make running less efficient by forcing your breathing muscles to work harder, new research finds

Experience all the Scenic City has to offer during this special race weekend

How do you make the best of a golf addiction? Add running.

Marijuana is still a banned substance for athletes, but new research is chipping away at the idea that it makes you faster

The logic is good and the anecdotes are common, but the evidence is shakier than expected, researchers find

There isn’t a ton of data on resistance training for women, so researchers pooled it to look for patterns

For 15 years, Hydro Flask has taken colors very seriously. Turns out, science agrees.

Our newest brand, powered by the editors of Outside, is ready to fuel all your running passions

New research suggests exercise may boost the “love hormone,” the latest in a long line of brain-boosting molecules

Jacqueline Alnes’ new book, ‘The Fruit Cure: The Story of Extreme Wellness Turned Sour,’ is part memoir, part cultural critique of wellness and diet culture

The Bullet Journal method lives up to the hype of being both a mindfulness practice and a productivity system

The pursuit of performance in a bottle inherently undermines our attempts to get faster, stronger, and healthier, our Sweat Science columnist argues

Data from a charity ride before last summer's Tour shows some obvious differences and surprising similarities to data from the pros.

New research explores the minimum effective dose of resistance training and the health effects of overdoing it

InsideTracker’s massive database of more than 23,000 runners shows that more mileage is associated with better biomarkers

After a certain number of hours, endurance races are basically eating competitions

How to stay healthy, get fit, and be more mindful

SIRO is partnering with Ramla Ali and Jonah Kest to develop a world-class wellness experience

Adults will take recreational cues from their children, “unprocessed” will become a marketing asset, and rodents will show us the way to eternal life. 

It turns out you can absorb more carbohydrates than sports nutritionists thought. But does it actually make you faster?

We try to gain a competitive edge from things like nutrition, recovery, weight training, and new shoes. But what if becoming a parent does the trick?

Over the past century, “maximal oxygen uptake” has turned out to be a valuable marker of both endurance and health.

The guidelines for returning to training after giving birth are “vague and inconsistent.” That’s no surprise.

How a blend of medicine and intuitive eating can improve your relationship to food

You won’t freeze your lungs exercising outdoors this winter, but there are reasons to be cautious about inhaling extremely cold air

Want to ride like Pete Stetina? Learn how he and other top athletes use Wahoo’s latest tools and technology to achieve their goals—and how you can too.

Fancy new midsole materials like PEBA make you faster, but at the cost of durability

…including a Rice Krispie Treat for adults

Aside from keeping you fuller for longer, protein has some other amazing benefits you don't want to miss out on

While a light jog or quick weights session might help clear out lingering congestion, there are times when exercise might actually do your body (and others) more harm than good

When to take cues from your body and rest, and when to treat soreness with medication

There are so many carbs to choose from. Here’s a breakdown.

Joint health is a cornerstone of staying active as you age. Not sure how to work on it? Start with these seven expert tips.

Brain fog doesn’t have to keep you from feeling your best. You can combat the unpleasant effects of brain fog by changing what you’re eating.

To ward off cognitive decline, a new analysis suggests that strength matters more than how much muscle you have

People all over the place are creating outrageous unofficial athletic contests that are equal parts grueling and just plain silly. What’s going on?

Want to stock your shelves to set you up for quick, nutritious meals? Look no further than these nonperishable canned foods that pack a nutrition punch.

The new science of skill acquisition can help coaches and athletes get more out of their workouts

News flash: All that data you’re mining may not be good for your health

Set a course toward a stronger you with this 30-day plan packed with expert advice and tips for training well, eating well, living well, and feeling great

More athletes are turning to the ancient tradition for relief from pain. But does it actually work?

Scientists want to know why we don’t keep getting bigger and stronger forever

Don’t let bad advice lead your immune system astray. Find out which immunity-boosting tips are nothing more than myths – and what you should actually do to stay healthy when cold.

A new federal law, the Rodchenkov Act, has the potential to dramatically clean up international sports. A case involving a Texas doping ring illustrates how the new legislation works.

After two new marathon world records, it’s time to reevaluate why marathoners are getting faster and what comes next

Toss out the marathon prediction equations. Understanding what determines ultra performance takes a whole different approach.

Watch how coach Lara Rogers helps women excel in professional running and pursue their wildest goals

Reclaim your breath to strengthen your sleep routine

All the digital training data in the world may not tell you whether your workout was any good

The correlation between physical contact with a bovine and good mental health

Replenish your energy and stay strong

A rigorous new study finds small changes in heart rate and subjective feelings of recovery. Do they matter?

After years of science failing to show the benefits of multivitamins, research has found multivitamins may benefit older adults and athletes

En el entrenamiento o en las carreras, encontrarás desafíos. Pero puedes aprender a superarlos.

While plant-based meats may sound like a no-brainer for your health, athletes need to read the fine print

A new study of athletic career trajectories finds that early success is less meaningful than you’d think

We often focus so much of our stretching on our legs, but athletes need to focus just as much time and energy on their upper body

Researchers assess the potential benefits—and downsides—of the hundreds of bioactive compounds in your morning brew

Vitamin B12 is an important player in keeping your engine running and your energy levels up. Find out which foods can increase your intake naturally.

Find essential electrolytes like sodium, potassium, magnesium in everyday fruits

Here’s what the experts say

Broadly labeling a certain cuisine as “unhealthy” is not only wrong—it’s also harmful

A trainer breaks down her go-to moves to maintain healthy hip abduction

Top performers often brag about clocking only a few hours of shut-eye a night. But is that really all you need for optimal functioning? We asked the experts.

When it comes to your recovery, you’re likely neglecting this section of your spine. Here’s how to offer it some relief.

Healthy human snacks don’t always translate well for pups. Veterinarian Dr. Heather Berst, MA, VMD, shares what treats are okay—and which should be avoided.

Tramadol has a long history of suspected abuse among cyclists, and now there’s enough data to put it on WADA’s banned list