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Details matter when it comes to keeping workouts fresh

You'd think the fittest men and women on the planet would outlive the most sedentary ones. But you'd be wrong.

The tennis superstar describes her favorite exercises and how she keeps a level head in tough moments, on and off the court.

We asked a writer to spend one month going as hard as he wanted to—or didn't want to. Here's what he found.

These between-meal bites are major performance boosters. And they can be whipped up fast in your kitchen.

The post-exercise recovery trend has produced mountains of new research. But can you trust the results?

Think you have one of the best jobs on the planet? Now's your chance to get your employer to help prove it.

Products based on the age-old concept of vibration therapy are cropping up everywhere, and athletes are some of their biggest advocates

After an hours-long day in the mountains, all we want to do is eat. These are the �����ԹϺ��� staff's go-to meals.

Thanks to smartphones and watches, athletes can track more data than ever. But is HRV all that really matters?

Turn your hands into powerful tools

It used to be that we all slowed down with time. Not anymore.

When you take former sex-trafficking victims into the wilderness for a few days of roughing it, know this: they’ve seen worse. Florence Williams goes on a trip organized by Atlanta-based She Is Able and learns that one size of adventure therapy does not fit all.

A long-standing debate on how to optimize your endurance efficiency gets a new infusion of data

The less you worry about making mistakes, the better you’ll perform

If you pick the right class, it's an invaluable tool for building strength, flexibility, and resilience

The easiest way to recover from the grind is to follow this basic formula, then get creative with the add-ons

Two-person teams trade in their cell phones for traditional navigation tools and attempt to travel over 1,200 miles through the desert.

Here's how to do it without breaking the bank

A new study probes why athletes like Callum Hawkins sometimes push themselves to collapse

The anti-inflammatory is extracted from the marijuana plant. Is this bud for you?

On Saturday, March 17 Mike Foote set out to push the boundaries of ski touring to the next level.

The world of capsules, pills, and powders is fraught with junk science and sketchy brands. Here's how the professionals wade through the confusion.

She started working at Alta when tickets cost $6.50 a pop. Now, as she prepares to retire, she leaves behind a legacy that spans four decades.

A new study explores why we're stronger and faster when someone is watching

We’re a competitive bunch. Here’s how we stay fit enough to keep up.

I'm approaching 30 and haven't competed in years, but that pre-race dread is much bigger than running

Pain psychologists explore the differences between those who finish ultra-endurance races and those who don't

The vests, bags, belts, and more that top athletes use to stay primed while they push

For serious performance gains, focus below your ankles

How Latino Outdoors is rethinking the ways their community gets outside

It might taste indulgent, but a peanut butter and jelly sandwich is effective and more affordable than the average energy bar

Sometimes, when it comes to making progress it's the smartest choice you can make.

Pounding fluid during a race doesn't have to be a miserable experience

An analysis of five decades of world records reveals a surprising shift in pacing approach

To get the most from your performance, you have to accept the unpleasant—and keep pushing

Travel, be more productive, get the right degree, and customize your career

In short, nothing good—and just one bad night can trigger a cascade of scary side effects

Don't overlook the most important part of your training cycle

These grocery store finds make it easier to feed your nonstop adventuring

Your foam roller can do much more than just release tight muscles. Use it to strengthen and tone your whole body.

Because beach season is just around the corner

A seasoned biomechanics expert offers his top insights on running-form danger signs

Researchers at Stanford and UCLA are teaching college distance runners that when it comes to staying injury-free, what they eat matters

For the first time, the International Olympic Committee is researching what it takes for new moms to return to high-level competition

The effort paradox explains everything from mountain climbing to buying IKEA furniture

Trick, bribe, deceive, repeat

Creating a workplace that truly makes us happy and healthy takes a lot more than standing desks and on-site yoga. Thankfully, new research has sparked a growing design revolution.

The feature-loaded, do-it-all smartwatches that give elites a competitive edge

An otherwise fit 42-year-old, I had the range of motion of a sycamore.

New research explores how ultraviolet light can trigger the production of health- and performance-boosting nitric oxide

The entrepreneur believes that biohacking can rocket your body and mind to peak performance. His Bulletproof diet zoomed into the mainstream, his Bullet-proof coffee has everyone quaffing butter, and his Bulletproof books fly off the shelves. Now Bulletproof Labs is out to hack, well, everything.

The National Geographic fellow on what he's learned from spending time with the happiest people on earth

You've heard about paleo, keto, Whole30, IIFYM, and intermittent fasting. But can they support an active lifestyle?

We investigated whether it's possible to get a healthy and delicious meal in a bottle

Thanks to new equipment and a more holistic approach to training, they turned a dismal 2014 showing into a commanding lead this year

It's the most reliable performance booster in the world—unless you have the wrong genes

The secret is in the toppings

When it comes to a restful night, a few little things—and one not-so-little thing—make a world of difference

When in doubt, reach for these science-backed ingredients

A comprehensive research review finds that "neuromuscular" gains boost your speed and efficiency

The tools and tricks the pros use to stay injury-free

Steer clear of takeout, snack foods, and grab-and-go sandwiches

Until recently, the Nike track star seemed destined for burnout. But last year in Boston, after a wave of disappointing races and a personal tragedy, she ran a record-shattering debut marathon. Will the new distance of 26.2 miles save her career?

Our columnist literally wrote the book on peak performance, but he had to reconsider everything after an unexpected battle with mental illness

The world’s first four-minute miler has died, but his approach to the sport should live on

Sure, eating less is the main driver of weight loss, but nailing the right amount of shut-eye each night helps too

In an era of specialization, a new study argues for diversifying your interests.

With the arrival of a long-rumored drink, endurance athletes want to know

The (surprisingly affordable) tools they use to build strength, power, and stability

For long-term health in endurance athletes, when you eat is nearly as important as how much you eat

The author and human guinea pig asked elite performers for advice on getting better sleep. Here’s what they said.

Whenever we hit the road for a daylong sufferfest or weekend adventure, we stock up on these bars and gels

Octogenarian Dr. Arthur De Vany, renowned for his theory of evolutionary fitness, shares his diet with Tim Ferriss

Sports psychologists weigh in on the challenges of being among the best in the world

This performance enhancer can up your game if you use it correctly

The surefire way to make sure you're getting the treatment you need

Eight life lessons from one of America's best marathoners

Don't knock 'em until you've tried 'em

Athletes have been shattering "expert" forecasts for the ultimate limits of our species for more than a century