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Gazing up at the night sky can be a major stress reliever. Plus, you might even catch a glimpse of something cool.

I'm planning to climb a bunch of fourteeners in Colorado, but bird flu is all over the state right now—is it safe for me to go?

Since the beginning of women’s sports, a question has loomed: who qualifies as female?

New technology is distorting track records. Ethiopian running legend Kenenisa Bekele makes the case that his world records are superior to the current ones.

Tired of sports injuries? Try animal flow—a form of quadrupedal movement training (QMT)—before and after your run, bike, or climb.

If you're searching for an active running community with lots of run groups, Austin, Texas, is the place to be

As summer temperatures skyrocket, we're all sweating more during our workouts. Here's how to know if you need more than just water to replenish.

Everyone knows how to run. Now biomechanical analysis may teach us how to do it better.

Elevate your fitness this summer with Hoka’s vertical Strava challenge

Ditch Hinge and Tinder. Join a running club instead.

Living well doesn’t need to be complicated, overwhelming, or expensive

Military scientists have developed an equation for how many calories it takes to haul weight in different ways

Some of the most hardcore athletes in the world are elite race walkers. Moving faster than most people can run, their sport pushes the limits of endurance, pain tolerance, and fueling.

This iconic New England city has the scenic routes, lively community, and year-round events that runners of all experience levels can appreciate

I never thought I would have to climb alone

More people in the U.S. are being diagnosed with tick-related diseases every year, but we don’t have to let that stop us from getting outdoors

After suffering a mental health crisis during a mountaineering expedition, National Geographic photographer Cory Richards walked away from his climbing career. After a terrible rafting accident, �����ԹϺ��� writer Katie Arnold nearly ended her marriage. This summer, they are both telling their stories.

A new study suggests men and women should address age-related declines in aerobic capacity quite differently

Explore New York’s running opportunities through the eyes of athlete, trainer, and run-club organizer, Mallory Kilmer

TikTokers are beseeching us to get off the treadmill and into the weight room. They might have a point.

Scientists have discovered some friendly new bacteria in the waters of Bath, England, which was once the Romans’ favorite soaking spot. What else is lurking in the deep?

A selection of (mostly) new titles for fans of science, endurance, fitness, and adventure

Many athletes believe that the more time they spend in the gym, the fitter and more competitive they’ll be, but that's usually not the case.

“Predictive processing” offers novel ways to think about sports psychology, the limits of endurance, and the urge to explore.

SunChips’ secret to success was that millennials like me grew up assuming they were better for you than regular chips, thanks to outdoorsy, health-conscious marketing.

This highly-runnable city has a variety of events, routes, and resources that draw in an active community of runners

Our Sweat Science columnist tries out the heat adaptation protocol used by Oregon runners, and survives (barely) to tell the tale.

A trove of ethnographic data reveals that persistence hunting—early humans relying on superior traits to chase down prey—was a worldwide phenomenon

Watch this travel expert find rejuvenating escapes in Dallas, Texas

I lost my brother to blood cancer four years ago. Between the waves, I’m still learning how to grieve.

Here’s why the Brooks Beasts use NOW® Sports to optimize their nutrition and recovery—and why it could be right for you, too

Wunderkind Jakob Ingebrigsten may have lost (again) on Saturday at the Prefontaine Classic, but don’t expect his unorthodox training approach to disappear

After years of racing against time, Olympic runner Alexi Pappas gave herself a longer window to consider motherhood.

During a recent press conference, Dauwalter dished on her approach to nutrition and fueling, early-career bonks, and more

Hard training and good genetics give elite runners an edge, but the four-minute barrier may have its own magic

When I learned I was at a much higher risk for skin cancer than most people, I had to reimagine what it meant to be outside

A photographer explains the transformative magic of showing up to the same creative task day after day

Scientists are finding that the subjective perception of time during exercise is more complex than expected.

Robert F. Kennedy Jr. told a court in 2012 that doctors found a parasite in his brain. There's a one-in-eight chance you might have something similar. I've had one, too.

Here’s what moms say they want more than anything else

Having a high VO2 max is great, but research is showing that the key to elite performance is maximizing something called fatigue resistance

Athletes train for years to overcome pain, exhaustion, and fatigue. But some people take it too far and are never the same again.

Cycling has always been touted as easy on the knees. But actually preventing arthritis? That’s a new one.

In a recent study, transgender women athletes performed better at some strength and fitness metrics than cisgender women—and worse at others

Running with your dog offers great health benefits for you and your four-legged friend. Here's what we know.

A new study blows up the conventional wisdom about maximum protein doses for athletes.

More than 30,000 runners celebrated the 128th annual marathon with sunshine and blue skies. Athletes from Ethiopia and Kenya dominate the elite fields.

It's the thing I see countless teachers get wrong when creating a sequence

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 �����ԹϺ��� 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 �����ԹϺ���, 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.