The company's library of studio exercise classes, integrated with on-screen fitness data from your Apple Watch, launches today. Our Sweat Science columnist takes it for a spin.

Swap your protein shakes for these cozy beverages packed with protein and electrolytes

A new study explores the links between exercise and pain perception, and how easily they can be manipulated

In an extended interview for the Outside Podcast, the CEO talks about the ways technology can help us lead healthier lives and the benefits we get from ignoring our screens

Apple's CEO says technology can help us lead healthier, more balanced lives—but we also need to learn how to ignore our screens

A new generation of futuristic at-home workout solutions—including Mirror, Tonal, and Peloton—were gaining steam even before the pandemic

Much more than fertility changes when menopause hits. Here's how to train through it.

After half a century of confusion, researchers have a new perspective on the transition from "aerobic" to "anaerobic" exercise

When you stop breathing, oxygen flowing to your brain actually increases—at least for a while

Dubious about the hyped-up claims of many skin-care products, one editor tried the popular Aztec Secret face mask. Now it's part of her weekly routine.

Avoid these mistakes and master the complex full-body movement

Embracing recovery will make you a better athlete. Your body is asking you to work in. It’s time to listen and respond.

A basic principle of training says you get better at the things you do most. So why does cross-training work?

Five gentle weighted moves to help you progress over time

A pro marathoner looking for a sponsor takes a scientific approach to finding the right match

Five items that made our lives easier, from a neck-saving pillow to an acupuncture set

Delicious meals can make extreme circumstances feel a little friendlier. These recipes from a backcountry chef are a good place to start.

The mental and physical benefits make it worth the extra effort

To pick their two-hour marathon team, researchers tested some of the greatest runners on the planet. Now they're revealing what they found.

Fatigue, writes our columnist, comes in two very different flavors, and fixing each requires a completely different approach

Work life got turned upside down this year, and many people are just thankful they have any job at all. But some companies have gone above and beyond to not just survive, but thrive.

Bust your gut like the gold-medal-winning cross-country skier

You don’t need an elaborate workout plan to get the most out of your resistance workout; you just need to tune into how you feel

Whether you’re training for your first marathon, dealing with a stressful job, or simply want to improve your sleep, WHOOP’s 24/7 heart-rate monitor can help you perform better every day

A new review sifts through the evidence for and against hiking with poles

Elite athletes Kai Lightner and Beth Rodden endured similar challenges. Now they want to help change the culture of the sport.

Flowing through a simple set of movements can help calm your nervous system down

A new study suggests that slow-twitch runners can handle higher mileage than fast-twitch runners before showing signs of overtraining

Proven tips from top athletes on how to nail the perfect morning adventure

Follow these tips to avoid excessive burping, gurgling, and nausea

Biology suggests that decades of running should invariably blow out your knees. Scientists are trying to understand why that doesn’t happen.

We asked a professional chef and a nutritionist to evaluate ten meals. Here's what rose to the top.

Even compared to athletes from other sports, endurance athletes have a unique relationship with discomfort

Bouldering psychotherapy is gaining traction because the sport is unique in its easy access and ability to draw out emotions

You're never too old—or too good—to brush up on your technique

Journalist James Nestor explains how humans started breathing wrong—and why relearning this lost art is so transformative

This expert advice will help you get out of a rut and take your skills to a new level

A new study asked coaches to rank the most economical runners after watching video footage. It didn't go well.

This three-move bodyweight routine is all you need to improve athletic ability

Experienced runners tend to match their breath and stride patterns, but trying to do it deliberately may backfire

Five simple strategies to stay motivated as the seasons change

How the practice continues to comfort the former big-wall climber after a life-changing spinal injury

The disruptions of 2020 mean that there’s an unusually large crop of endurance-related books hitting shelves this fall

A new analysis casts doubt on the idea that people are born as "responders" or "non-responders" for training in thin air

A handful of apps are rebranding the menstrual cycle as a female athlete's untapped superpower. Here's what you need to know about them.

One Outside editor added acupressure to her quiver of remedies for her mild scoliosis. It worked better than she thought it would.

A new study suggests that strength training is more important than electrolytes for preventing cramps

It’s the one training metric virtually all runners track, but running scientists think we can do better

We’ve partnered with WHOOP and Tracksmith to create a first-of-its-kind running recovery program—and we want you to join.

With a little help from technology, Joshua Cheptegei took down the 5,000-meter world record in Monaco last week

After a controversial Australian study's negative findings about low-carb, high-fat diets, scientists made adjustments and ran the study again

In the latest installment of Ask a Doctor, Outside's resident physician dives into trends like vinegar shots and Theraguns

Updated guidelines write a prescription for exercise that may be just as important as traditional cancer treatments for maintaining—and regaining—your health

Keep your fingers, shoulders, and back happy with these nine strength and mobility moves

Modest amounts of artificial sweeteners are unlikely to cause much gut distress, but sugar alcohols can wreak havoc

After an exhaustive search of the literature, researchers conclude that, well, it's complicated

How self-determination theory can help you survive the long, drawn-out pandemic

Satya Yoga, the nation's first yoga teacher training program for people of color, is trying to change who's leading yoga classes—which will also affect who participates

When the going gets tough, which sensation actually slows you down?

Always a fitful sleeper, one editor discovered Howard Leight earplugs a decade ago. It's still the only brand she uses to avoid restless nights.

The ability to sustain a high rate of energy burn for a prolonged period of time may help ward off cancer

The pandemic is prompting activity-tracking companies to pivot from personal to public health

New research says yes. Fortunately, there's something we can do about it.

The hotter it is, the closer we come to the ever elusive goal of besting the horse—which supports the evolutionary "born to run" hypothesis

Use tempo and isometrics to improve your bodyweight routine

Three new studies explore iron patches, injections, and dose frequency

Learn how to kick-start the habit of daily movement with our free ten-day email course

Sweaty workouts do enhance your endurance, according to a new theory, but it may take longer and function differently than previously thought

To mark the start of his sixties, Will Turner swam, biked, and ran 14,765 miles, many of which took place through iconic national parks and public lands. Here are the most stunning photos from his "races."

A new aerodynamic analysis runs the numbers on exactly where to run when you’re behind someone else

Put that bouncy desk chair to work with this full-body strength routine

When CEO Greg Glassman retired after making inflammatory comments about George Floyd, many in the fitness community weren't surprised. But where the popular fitness business goes from here is anyone's guess.

A decade after 'Born to Run' made them famous, anthropologists take another look

A new study uses the training data you upload to sites like Strava to estimate the "critical speed" that determines your race performance

Trying to improve your sleep quality? Get back to nature.

'Working Woman's Trans BC Enduro' follows two cyclists as they prepare for a six-day mountain-bike race in the Kootenay Range

The science is clear—time spent fishing can lower stress, make you smarter, and lift your mood

With the right approach, you can come out of summer running stronger and fitter 

To figure out how your body will respond in hot conditions, consider your “physiological equivalent temperature”