Science
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The ins and outs of staying clean (and safe) at camp
Should all your training be hard? Do you need to stretch? We've got answers.
It’s the one training metric virtually all runners track, but running scientists think we can do better
In her new book, 'Superman's Not Coming,' the activist gives a lesson in community engagement and warns that we shouldn't expect the government to save us
There are those that help you see and those that help you be seen. Here's the difference—and how to buy the ones you need.
The marine biologist wants us all to start asking a new question: What does the future look like if we get it right?
With a little help from technology, Joshua Cheptegei took down the 5,000-meter world record in Monaco last week
For more than three decades, Paul Knapp Jr. has taken travelers out into the Caribbean Sea to hear humpback whales. Now seismic blasts threaten to silence their songs.
After a controversial Australian study's negative findings about low-carb, high-fat diets, scientists made adjustments and ran the study again
Science says the HoverGlide reduces vertical forces by more than 80 percent. But what does it actually feel like?
Updated guidelines write a prescription for exercise that may be just as important as traditional cancer treatments for maintaining—and regaining—your health
After an exhaustive search of the literature, researchers conclude that, well, it's complicated
In 'The Next Great Migration,' journalist Sonia Shah explores the hidden history of human and animal movement
The continent has entered its long, dark night, but just over the horizon is the question of how to make sure it stays free of COVID-19 once it reopens in August
When the going gets tough, which sensation actually slows you down?
From pizza to ultramarathons, what's the best way to chill out?
Beat back summer-vacation boredom with these seven games for the family
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.
These items will keep you comfortable and protected while you tend to your flowers and veggies
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
Three new studies explore iron patches, injections, and dose frequency
Sweaty workouts do enhance your endurance, according to a new theory, but it may take longer and function differently than previously thought
A new aerodynamic analysis runs the numbers on exactly where to run when you’re behind someone else
Between a global pandemic, protests against police brutality, and unprecedented environmental rollbacks, a lifelong asthmatic reflects on how 2020 is the year we must come to terms with the tenuous nature of this simple act—and why ensuring our fragile future begins with protecting our air
Understanding the interface between humankind and wildlife is essential to averting infectious-disease outbreaks. We can't afford to ignore it anymore.
Trying to improve your sleep quality? Get back to nature.
A new study uses the training data you upload to sites like Strava to estimate the "critical speed" that determines your race performance
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
New research explores why you go slower and feel worse, even though you’re pushing as hard as usual
Wouldn't it be great if there was a technique that would allow us to vanquish fear and beat back stress?
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.
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
Yes, it's serious, and it's time to start taking some practical precautions
ϳԹ'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
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.
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.
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