Endurance Training
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Doctors break down why you get side stitches and the simple ways to ease the pain without stopping.
New data sheds light on a longstanding debate.
Your metabolism adapts to save energy when you work out a lot, a new theory claims.
New research on drinking during exercise is challenging old beliefs.
Choosing your pace based on the physiological transition from easy to hard is more effective than calculations based on maximum heart rate, research shows.
New research suggests it’s actually not about your heart.
A sports kidney expert explains what your urine says about your health
Scientists propose a unified framework for describing how intense your workout is
Gabrielle Suver of Clermont, Florida faces a long recovery and an uncertain future in her sport after becoming the victim of a hit-and-run
Brain fatigue really does slow you down, new research suggests
Scientists weigh in on the underlying causes of relative energy deficiency in sport
Waking up at 3:30 A.M., balancing work, and logging hundreds of miles in the Colorado mountains gave me more than endurance—it gave me perspective
Nomio, a Swedish broccoli extract, claims to lower lactate levels, but its true benefits may go deeper
Scientists explore the links between how many calories you can digest and the ultimate limits of endurance
This AI-powered exoskeleton ushers in a new era of adventure
Touring dancers aren’t just artists—they’re high-performance athletes. With the release Taylor Swift’s 'The Life of a Showgirl,' we chatted with real-life showgirl and Lady Gaga's former backup dancer Sloan-Taylor Rabinor to get a behind-the-curtains look at the training, discipline, and endurance it takes to thrive under the spotlight night after night.
Last year, Sunseri broke the speed record for ascending and descending the 13,775-foot peak. The record was shortly revoked
Top cyclists on the women’s World Tour do better when they rack up more easy training, a new analysis finds
Scientists explore what’s happening in our brains during prolonged efforts
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
Your watch or wearable isn't actually the most accurate way to determine how hard your last workout was. This completely analog method is.
A new approach to endurance training involves inhaling carbon monoxide—and is reviving old debates about dying to win
“My goal is to make it clear that you can be an average Joe and still take on those big races”
This ultramarathoner didn’t start running until his thirties. Now aged 55, he’s survived cancer—and completed a longtime quest to ski 300 miles across a remote Arctic island.
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.
A new study shows the once-popular marathon supplement could offer significant endurance gains.
New data explores the complex links between your apps, mental fatigue, and athletic performance.
Three-time finisher John Kelly made it the farthest with a "fun run" before tapping himself out
The risks of training while depleted are finally getting lots of attention—maybe too much
Scientists tackle the challenge of maintaining qualities like high VO2 max and good running economy even when you’re tired
It’s either way more than you think or way less than you think, depending on which scientists you listen to
New data suggests that the most efficient uphill slope is steeper than you think
Looking to trim food costs? You’re not alone. These Costco staples help athletes eat better and save money at the same time.
When John Orth, a violin maker from Colorado, set out to break his own world record for the most pull-ups in 24 hours, he had no idea he was competing against a college kid from Virginia
New data from 2.5 million marathon finishers finds that subtle changes in air quality can affect your race time
New data shows that the biggest difference between elite and middling runners is how much time they spend jogging
Everyone knows taking time off is good for you—in theory. Maybe these new results will convince you to actually do it.
Keeping your muscles cool will supercharge the benefits of aerobic training, new findings suggest
By triggering a diving reflex, athletes who perform breath-holds can increase red blood cells—and, possibly, endurance
If you want to up-level your running, here’s how to get a jump on the new year
Scientists crunched the numbers to come up with the single best predictor of how long you’ll live—and arrived at a surprisingly low-tech answer
A veterinarian by day and ultrarunner by night, Paris became the first woman to complete the notoriously hard race this year
After years of rumors, new data suggests that real-time lactate sensors are finally ready to hit the market. But will athletes know what to do with them?
Whether you’re hiking over rough terrain or going for a walk around the block, rucking is an easy way to add in resistance training
Do You Have More Slow-Twitch or Fast-Twitch Muscle Fiber? The Answer Could Change the Way You Train.
More evidence emerges that muscle-fiber type matters—if you can figure out which type you have
An excerpt from Brendan Leonard’s new book ‘Ultra-Something,’ which explores why we’re so drawn to the long haul
Scientists recently examined the physiology of the increasingly popular open-ended race format—running 4.167 miles every hour—pioneered by Gary Cantrell.
An adventure is an idea. It doesn't even have to be a good one. Here's a helpful guide to dreaming them up.
Don’t stress about what to get your fitness-obsessed friend—we’ve got you covered
From Swedish Fish to fun-size Twix, I tested Halloween candy as fuel for long runs. Here’s how they compare to traditional sports nutrition—and ones that won’t haunt your training.
We lose power more quickly than strength as we get older. Researchers are trying to understand why—and how to fight back.
Research on athletes who are experienced meditators finds better “response inhibition” and superior endurance
Our Dear Gear columnist breaks down the benefits—and potential downsides—of buying a super shoe
A new study tests the performance claims of Omius’ unique looking headband worn by Olympic legends Sifan Hassan and Eliud Kipchoge.
Researchers were once convinced that some people have a bigger training response than others—but the data says otherwise
After running myself into the ground for the hundredth time, I had a realization that let me give myself a much needed break
Researchers in New Zealand used athlete data to pick up patterns in how we recover. Their insights are surprising.
If you feel like your athletic performance is falling short, this new research might explain why
New technology is distorting track records. Ethiopian running legend Kenenisa Bekele makes the case that his world records are superior to the current ones.
Our photographer traveled the Western States Trail Ride, covering its 100-mile length through California’s Sierra Nevada, to document the horses and riders taking on this grueling challenge
If rising temperatures have you clamoring to stay inside until fall, you can adapt your body to them and thrive on the trail
Everyone knows how to run. Now biomechanical analysis may teach us how to do it better.
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.
A new study suggests men and women should address age-related declines in aerobic capacity quite differently
A selection of (mostly) new titles for fans of science, endurance, fitness, and adventure
“Predictive processing” offers novel ways to think about sports psychology, the limits of endurance, and the urge to explore.
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
Three days in total blackout darkness doesn’t sound that hard, until you hear this story about someone who tried to do it
Wunderkind Jakob Ingebrigsten may have lost (again) on Saturday at the Prefontaine Classic, but don’t expect his unorthodox training approach to disappear
Scientists are finding that the subjective perception of time during exercise is more complex than expected.
Having a high VO2 max is great, but research is showing that the key to elite performance is maximizing something called fatigue resistance
There are lots of theories about how to avoid altitude sickness. But in practice, acclimatization isn’t so straightforward.
Athletes train for years to overcome pain, exhaustion, and fatigue. But some people take it too far and are never the same again.
The fitter you get, the more likely you are to feel that you can’t get enough oxygen during hard exercise