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In her new book, 'Good to Go,' science writer Christie Aschwanden breaks down popular myths about recovery

The benefits of beet juice seem to be weaker in trained athletes. They just need more of it, a new study suggests.

A new multi-study review finds no advantage to following a hydration plan compared to simply drinking when you feel like it

Looking to boost your athletic performance? Start with your music.

Our associate managing editor drank a gallon of water a day for a month. A lot of you had follow-up questions—here are her answers.

Come for protein. Stay for chocolate.

On polar madness and other games the Arctic plays with the human brain

A detailed analysis of historical Boston results wades into the long-running debate on sex differences in endurance

The ski mountaineer takes a no-frills approach to prepare for the world’s hardest descents

Side abs are critical to your overall core strength—don't neglect them.

He's a retired Navy SEAL, so prepare to suffer

Trying really hard works—and then it gets in your way

A mixed workout program produces the best heart health outcomes, a new study finds

A self-proclaimed water hater slogs through a monthlong hydration quest

Former Navy SEAL and endurance athlete David Goggins insists that discomfort is the key to self-improvement

This fall I joined the ranks of Shawn Baker's all-meat cult for 30 days. Here's what happened. 

Five moves to get you through ski season injury-free

Five different ways to store a week's worth of food

Keep your fitness regimen in-house

Sal Masekela, first son of a Haitian immigrant and a legendary South African jazz musician, was the face and voice of the X Games, Red Bull’s Media House, and the Olympics. Now, as the meteoric growth of the action-sports industry comes back to earth, the most connected man in the room is left wondering what’s next.

Addicted to efficiency? Start by finding your lowest point in the day.

No matter how many miles you're putting in, these recipes will satisfy your cravings

There's more to it than just trying really hard

Current guidelines for sun exposure are unhealthy and unscientific, controversial new research suggests—and quite possibly even racist. How did we get it so wrong?

New research confirms that a week of hot tub sessions helps your body adapt to heat

A month on mPEAK, a performance-driven mindfulness program

Researchers explore how your brain chemistry may start dulling pain and boosting mood before you even take a step

The bestselling author talks to Tim Ferriss about the changes we can all make to transform our lives

A fast-mimicking program called ProLon claims it can

After adopting a meditation practice a decade into his career, Knox is near the top of his athletic game

According to the world-class climber, greatness is mostly mental, no matter your age

A frank survey of the hottest new workout classes

One of our editors spent a month working through her feelings with Woebot, a therapy chat bot. Here's how it went.

Here are the most jaw-dropping accomplishments of the year

The editors weigh in on all the things we ought to give up... but won't

Keep it simple. Consistency is key. Get out of your own way.

Real-world data shows elite ultrarunners average 180 steps per minute—and that means nothing

We asked some of most prominent experts what to expect in the coming year

Our advice for maintaining your nutrition and training goals this holiday season? Chill out.

A successful day begins with reliable rituals

Give the ultimate holiday present: new ideas for healthy and delicious meals

After her win at the UCI Mountain Bike World Championships, Kate Courtney noticed a shift in how people talk about women in sports

My father founded the notorious 120-mile Triple Bypass bike ride in Colorado. After a few failed attempts, I set out to finally complete it.

There's a fine line between dialing back exercise during the holidays and losing your fitness altogether

New research finds weightlifters have stronger tongues and runners have better tongue endurance—and that matters

Delicious recipes for easy, all-in-one meals packed with nutrients

Don't set yourself up for failure

The basic foundation to help build your yoga mastery.

Keep calm and snack on

No gym? No problem. Here are 7 workouts you can do on the fly.

Plotting top-100 marathon times for the past decade shows that Eliud Kipchoge’s world record is a huge outlier. The question is why.

Stressed? Overworked? Need a vacation? Put away your phone and go outside with no schedule or plan.

There's a lot to learn about the good life from sommeliers and hot-air-balloon pilots

The year in adventure fitness, gear, and sports was shaped by bold visionaries with world-changing dreams—and the mojo to make them real

At the 2016 world championships in Qatar, cyclists swallowed thermometer pills before competing. Here’s what scientists learned.

You can do a lot more with a foam roller than you might think

Meet the minds shaping and building the big business of the outdoors

From big-wall climbers to surf champions, these are the most dedicated, successful athletes of the year

Kimchi, kombucha, and pickled veggies all have one thing in common: good-for-you bacteria

We give you the gift of learning to fall

This week, we walk you through six daily exercises to boost mobility and balance.

The former white-boy rapper and mega-successful serial entrepreneur has become a bestselling wellness author and Tony Robbins-style life coach. His latest venture, a highly social weekend of walking up mountains until you drop, called 29029, is pitched as a new breed of restorative endurance event. But is this just a brutal group hike with good marketing?

The simple system is all you need for an effective full-body workout

It's never a bad time to re-evaluate your digital addiction

Dietary fiber contains prebiotics, compounds that boost the growth of beneficial bacteria

To fuel for athletic success, consider specificity, periodization, and personalization

To become an Air Force pararescue specialist, you have to get through a brutal training course and stay underwater for a long, long time

Skiing is a dance. We consulted a pro skier and former ballerina to find out how to train for it.

You don't always have to go out to work out

Bequi Livingston found power and confidence in physical strength. Now she's teaching other women to do the same.

Wild rice stuffing, date pumpkin pie, savory sprouts, and more

A U.S. Army study aims to pin down the optimal staging protocol before high-altitude tests of endurance

Unraveling how a carbon fiber plate and space-age foam combine to make a more efficient shoe turns out to be trickier than expected

Nonprofit the Phoenix has a radical idea for those recovering from drug and alcohol addictions—get moving

The government just released new fitness guidelines, which we boiled down to a single, simple mantra

Convenience and versatility make for a winning piece of fitness equipment

Colin O’Brady thinks it’s possible—but just barely—to haul enough calories to traverse the continent. Here’s how.

Most nutrition trends aren’t worth your time. But there are a few exceptions.

Pioneering scientist Dr. Rhonda Patrick talks to Tim Ferriss about smarter approaches to popular lifestyle interventions