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By week three, my right knee filed a formal complaint

New research around muscle elasticity offers some surprising insights for marathon runners—and could explain how "super shoes" actually work

No fancy equipment is needed—just your finger, your Notes app, and 60 seconds a day

Because doing it at the wrong time can throw off your zen for the rest of the day

All you need is a doorway, a chair, and a stretching strap

The program Synrgy Cycling matched me with a coach who understands women’s health and how different phases of the menstrual cycle may impact performance

Formulated with zinc oxide or titanium dioxide; these options are great for sensitive, acne-prone skin and the environment

An hour of darkness, silence, and floating changed how I think about stillness

Preliminary findings suggest marathoners and ultramarathoners may have a higher risk of abnormal colonoscopy findings, but previous studies paint a different picture

Knowing your foot shape, arch, the way you walk, and even your toe shape makes it easier to find comfortable, supportive shoes that fit

It looks weird, but it works

Science says relieving yourself outside might be the healthiest alternative

Top cyclists on the women’s World Tour do better when they rack up more easy training, a new analysis finds

Not all perspiration is created equal

Most people aren't getting enough of this key nutrient

Whoever told you to squeeze your core all the time...was wrong

A new study bolsters the claim that collagen supplements can help remodel your tendons and muscles

A facial and oral pain doctor explains what causes tension in the sides of your face and shares five ways to relieve TMJ-related pain

Dogsledding taught me how to endure the cold—but cryotherapy felt like a different beast. Here’s how my body reacted to the rising health trend.

The white, clumpy curd was all the rage in the early 20th century, but it has recently made a comeback. Young people are putting it in everything from dips and pastries to ice cream. While once pushed as a meat alternative during the First World War, its current craze seems to be rooted in Zoomers’ quest to achieve #fitlife. So, what makes cottage cheese the protein-packed star of the moment?

The good news? You can limit some of that damage by strengthening the muscles that keep you upright.

Skin cancer rates are rising and one in five Americans will be diagnosed with it before the age of 70

This week, President Trump announced that he's bringing back the Presidential Fitness Test to gym classes across the nation. Here's what the '�����ԹϺ���' edition would include.

It's best to get of out your clothes ASAP

These moves are yoga instructor-approved and help release tension in the muscles surrounding the spine, glutes, and hips

When I was diagnosed with ADHD and autism at the ages of 19 and 22, respectively, everything clicked into place, and I was catapulted into a journey of self-discovery and acceptance. I realized the problem wasn’t travel—it was unmet needs.

Now that the fastest marathoner in history, Ruth Chepngetich, has been caught, is it time give up and let athletes dope?

Scientists explore what’s happening in our brains during prolonged efforts

Feeling frazzled? Even being near one of these environments will help you chill out.

Ayurvedic teachings outline the optimal timeframe for high-quality sleep and how to adjust your routine to get in bed at a decent hour

Sunburned lips are a thing and they really, really hurt

Physiologists track the calories burned and fluids consumed during a mountain ultra

Even a light weight can give you results

You've probably been overdoing it

"Never outrun your joy of running.” —Julie Isphording. How to train and fuel well as a runner.

A weighted vest is an easy way to add some extra resistance to your strength training routine. Try these five weighted vest exercises.

Thinking of taking the 13.1-mile plunge but not sure where to start? This half marathon plan will carry you from the sofa to the start line—and across the finish, too.

Patterns emerge in a database of more than 100 trail-running fatalities

The terms are linked but not synonymous

My friend who completed the Black Canyon 50K earlier this year, swears by pickles

Training plans for those who have never run before to runners looking to improve their performances

These nonprofits and therapists harness the healing properties of campfires to help veterans, trauma survivors, recovering addicts, and at-risk teens

What we learned about the power of the mind, drafting, pacing, and more

Get healthy with us. Let's dive deep into the latest science behind sleep, nutrition, fitness, and more.

One of these moves requires a bath towel

At Nike’s Breaking4 event in Paris, the Kenyan star clocked the fastest ever mile by a woman. Here's how she did it—and why the 4-minute mark remains elusive.

Doctors said she had a small chance of survival—but a special bond with a horse named Savannah helped her pull off a miracle

Our Sweat Science columnist is on the ground in Paris for Nike’s Breaking4 race on Thursday

Eating sugar probably isn’t going to drive you to an early grave. But being deathly afraid of it definitely could.

I’ve spent the past four years twirling, shaking, and rolling around on the floor with strangers and it’s given me more answers than I can count

Repeated twisting of the uppermost part of your spine can lead to laxity and instability; sports doctors recommend safer options

Who knew that the key to a good night's sleep was a cute fabric headband?

These natural formulations definitely don't stink. Hopefully, neither will you.

Six years ago, Nike orchestrated the world’s first sub-two-hour marathon. Now, the brand—and Faith Kipyegon—are going after the women’s mile with a high-tech suite of shoes, apparel, and race-day strategies.

Spine doctors say hiking can be a surprisingly good source of back pain relief—but the way you hike matters.

Your watch or wearable isn't actually the most accurate way to determine how hard your last workout was. This completely analog method is.

Chilling on your belly is very, very good for your spinal alignment.

Where to work up a thirst—and toast your adventures—in America’s first national park

A new approach to endurance training involves inhaling carbon monoxide—and is reviving old debates about dying to win

For fly-fishing evangelist Austin Campbell, there’s nothing better than catching—and protecting—Yellowstone cutthroat trout

These yoga poses can help you conquer your next mountain with more mobility—and less pain.

These moves will prep your lower body and help you avoid injury

It’s not just about big muscles: scientists now believe that protein is also a recovery aid and even a fuel.

Your meal frequency can have a major impact on your energy levels.

These are easy to make and pack a flavorful punch

Sometimes the whole "calm" thing really must come after the storm.

According to new research, keeping two repetitions in reserve is almost as good as maxing out every set of your strength routine.

Not only does the robot waste copious amounts of water, but it spits out incomplete (and bland) recipes

Physical therapist-approved moves to warm up your arm, back, and chest muscles

It's time to deeply and truly appreciate the green stuff

Nutrient-dense, delicious, and super easy to make

Recent studies show that time spent with a furry friend diversifies your gut microbiome

The internet is ablaze with criticism of the Millennial workout staple. But are sweats really the answer? Our staffers duke it out.

Lactic acid has long been vilified, but new research shows that it doesn't impair muscle function. In fact, it might actually be good for you.

Rather than distracting me, the accessory helped me tune in.

As a bonus: you can use leftover aloe gel on sunburns, cuts, or on your face for a dewy glow

A new study shows the once-popular marathon supplement could offer significant endurance gains.