Spanish-speaking guides call the drug "levanta muertos" for the way it "brings life to a dead person"
To figure out how your body will respond in hot conditions, consider your “physiological equivalent temperature”
When excruciating ankle pain threatened to sideline her ski season, one of our hard-charging editors tried Lazarus Naturals' CBD balm as a last resort. It worked—even though she still doesn't know how.
From a young age, the ocean provided relief from mental illness, something I've been unable to replicate with any other form of nature. It turns out, there's a science behind why some people prefer water.
Emily B. Martin's new novel, 'Sunshield,' is inspired by American landscapes and explores how individuals can impact their environment
Maybe the debilitating effects of chronic overtraining syndrome are in your muscles after all, not your head or your hormones
A group of eight researchers from China just summited the mountain with the sole mission of getting the most accurate measurement to date of the world's tallest peak
Doctors take an oath to do no harm. But in her book, 'Sex Matters,' emergency medicine physician Alyson McGregor explains how doctors are unintentionally harming women by practicing a model of medicine based on men.
Physiologists from around the world share their pet theories and crazy ideas on what it will take to break records
A new study of female athletes sees big strength gains from twice-a-week lifting
Researchers put the four main running power devices through a series of tests and picked a clear winner
They're not more tired than the rest of us, according to a new study—they're just better at sleeping
Yes, it tastes great, but it's not a drug
New research explores why you go slower and feel worse, even though you’re pushing as hard as usual
In his new book, 'The Wedge,' bestselling author Scott Carney travels the world to investigate the surprisingly effective methods humans have developed to rewire our brains and control our response to stress. And it all starts with taming fear.
Wouldn't it be great if there was a technique that would allow us to vanquish fear and beat back stress?
New research on mental fatigue suggests that even elite runners perform worse after a 45-minute computer task
Last week a paper suggested that runners and cyclists need much more than six feet. The report went viral, and backlash ensued. But there was some legitimate science behind the claims.
New research suggests that the lactate produced by hard interval workouts alters the hormones that determine your appetite
But you still need to avoid others as best as you can
So-called "flush drownings" lack an obvious cause like getting trapped underwater. Researchers now believe water temperature is a key factor.
There's something about swimming that makes us feel very much alive—even as we enter an environment where the risk of death is all around us
Increasing my visibility profile on the bike seems like a great way to improve safety. But does it matter?
Some sports scientists believe that a measure called the "acute-to-chronic workload ratio" can predict your risk of injury. But critics aren't so sure.
Even with major races postponed, the sport remains upside down, with the focus still on shoes instead of who's wearing them
For endurance athletes, new research suggests that different pre-race rituals, or even no warm-up at all, give pretty much the same results
Products and companies offering a quick and easy immunity boost aren't going to help, but these three everyday practices might
Social distancing is a prime opportunity to discover the nature in our own backyards and redefine our idea of what's wild
Journalist Sarah Scoles's 'They Are Already Here' explores people's obsession with discovering what else may be out there
What to buy, what to cook, and what not to worry about in the age of COVID-19
Our writer tests out a novel “natural performance enhancer”: breathing through your nose. It's harder than it sounds.
Nobody gets a free pass to sit all day, but new research on how sitting affects your arteries offers some encouraging news for cyclists
Emerging research suggests that you should embrace the steam
Nutritionist and journalist Christy Harrison makes a case against the state of nutrition in America in her new book, 'Anti-Diet'
New lab data from a record-setting 59-year-old offers insights on how we age—and, potentially, how to avoid it
Crack open a nice cold can of CBD
Yes, it's serious, and it's time to start taking some practical precautions
Outside's go-to physician, Dr. Brian Cole, weighs in on anxiety, headaches, and poor posture, in his Ask a Doctor column
Recent studies suggest that sunlight may lower blood pressure in ways that have nothing to do with vitamin D
New technology is striving to make it happen
As the temperatures warm, heavier snow is likely to become the new normal
Humans were born to dive, according to some scientists, and that fact helps us thrive at high altitudes
After a nasty bike accident, journalist Sarah Allely found basic activities impossible. Then she started spending more time outdoors.
A wilderness medicine expert and former AT thru-hiker shares her tips for tackling a long-distance backpacking trip
With over 8,000 different "sustainable" hotel certifications, how do you know what's greenwashing and what's the real deal? We consulted experts to find out.
Pretty much every elite endurance athlete trains in mountain air or the altitude-tent equivalent. But a few scientists think they're wasting their time and money.
Computers can identify sounds much better and faster than humans. So what do we learn when we ask them to listen to everything?
Before trying a fad diet, make sure you have all the information—and eat plenty of calories while you're at it
The United States leads the world in spending for health and fitness but still ranks lowest in measurements of actual health. How do we break the cycle?
After a long day on the slopes, your body deserves a little après of its own
Or why you don't have to get up at 4 A.M. to perform a two-hour ritual of self-care
There's at least a theoretical basis for believing in the power of CBD topicals
Launched by Specialized CEO Mike Sinyard, Project New Day promotes the use of hallucinogens like mushrooms to treat addiction and PTSD
The simple story of an unfair shoe with “springs” doesn’t capture the true complexity of the ongoing debate about technology in footwear
A new study finds unexpected benefits from super-short intervals with even shorter recoveries
Journaling is for everyone, but especially athletes. Here are the two types of journals you should have and how to get started.
Scientists are increasingly skeptical of the benefits of flexibility, but the fitness world doesn’t want to hear it
When Rebecca Mehra tried to unplug a broken oven, she almost ended her track season—or worse
Fluorinated glide wax is being banned from elite competitions, and big brands like Swix say they’re searching for environmentally friendly alternatives. But the seductively speedy—and noxious—compounds are unlikely to loosen their grip on the sport anytime soon.
New research hands down verdicts on what to lift, how much, and how hard
Six testers ran, climbed, hiked, and played outside with 17 different deodorants. Here's what didn't stink.
Personalized drinks and shakes are the latest innovation in the quest to boost performance
Italian students will soon be required to learn about global warming. American kids? Not so much.
Heat training has been hyped as a powerful workout enhancer, but new research sounds a note of caution
Anyone who disagrees is an "obvious idiot"
As we begin a critical new decade for the environment, we need to look toward the light
Researchers deploy machine learning to match running styles to the risk of different types of injury
To better push your limits, try swearing off some of your most familiar crutches now and then
Plenty of food trends from this year should stay in the past. And a few of them should come with you into 2020.
Work hard, play hard—that's how many of us live today. But it turns out that our supercharged lives aren’t so great for us, and fitness experts and doctors are now emphasizing restorative practices and rest to improve performance and overall health.
17 surprisingly easy steps to a happier, less strung-out life—starting with your vagus nerve
Both substances are being studied for stress and anxiety relief. We asked the experts if and how they work.
Why companies as diverse as Patagonia and General Mills are suddenly focused on getting dirty
Improving your max aerobic power may come at the cost of worse efficiency, a new study finds
Ten books that sparked debate, started conversations, and launched movements in the past ten years—and what to read next
The experts have spoken on what we will see in the coming year
Up-to-date guidelines on the pros and cons of filters, ultraviolet light, chemicals, and other options
Snow science is a wild thing. And in the Sierra Nevada, it's a particular beast all its own.
A registered dietitian nutritionist could help you solve a mystery gut issue, boost your training, or develop a better relationship with food. Here's how to know what to look for.