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You’re likely to face some hot races, or at least some hot training days, this summer. So I asked five elite ultramarathoners what gear they recommend to keep cool during the hottest months of the year. Below, I’ve listed five gear hacks, tips, and products these men use to battle…

That magic threshold is, well, bogus. And we've known it for years. So why are we still so obsessed with logging 10,000 hours of deliberate practice?

A little goes a long way.

Bet you didn’t think this would come up in your fitness regimen, but your esophagus needs love during training, too. Intense exercise can contribute to heartburn and gastroesophageal reflux disorder (GERD), and there’s a good chance that ramping up your routine may be causing your symptoms, says…

Taking your kids to an ultramarathon can be a distraction from the aches and pains of running long distances

How do we put this nicely? If you’re anything like the participants in a recent Canadian study, you’re probably wrong about your workout intensity. (And yes, you probably are like them, considering that the group contained both men and women of different ages, ethnicities, and BMI classes.)…

What’s one thing college kids and health nuts apparently have in common? Butt chugging. And a total lack of common sense.

There's a new brand in town. Does its dehydrated food stack up to—or shrivel before—its rivals?

Play outside with kids your own age

You're overworked, overstressed, and overconnected. But don't worry. We're here to help.

These oases of relaxation, adventure, mindful eating, and awe-inspiring views are going to be very popular once it's safe travel again. Until then, we can dream.

Keep your four-legged adventure companion cool in the heat this summer.

With a little help from Make-A-Wish, Yosemite’s first honorary park ranger earns his keep and proves his strength

This may not be the answer you’re looking for, but it’s the truth: The most effective way to get back into shape (and stay that way) isn’t by just doing one magic move over and over. The good news? You may not have to work out more than or…

Depending on the school of thought you’re following, meditation can be practiced in a number of ways—sitting cross-legged in a dark room, while on a long run, or even on a crowded bus with the help of a smartphone app and a pair of headphones. In general, though,…

Some good foods contains natural SPF—and you should be eating more of them

Vitamin B12 shots have been around for years, and they’re often marketed as a miracle cure for everything from fatigue to depression to those stubborn extra pounds you can’t shake. And while it’s true that a B12 deficiency can contribute to those things, there is…

Some full-grown athletes are turning to breast milk—yeah, you heard us—for an energy boost and protein push. If you're thinking there's something wrong with that, you're right.

New Healthkit app displays live fitness data, connects doctors and patients in real-time

From long flights to backpacking treks, one of the ugly universal truths of travel is a condition known as stanky bottom. Toilet paper is no match for this. In fact, it often exacerbates the problem, causing chafing and other issues. When stanky bottom strikes—and strike it will—you’re going to need…

You should be vigilant about Ebola if you’re traveling to West Africa, just as you should take precautions with more common threats such as crime, malaria, and crazy drivers. It’s all part of safe and healthy traveling. But don’t worry excessively about it. Below are some tips for minimizing the…

It's not just mental. Even mild amounts of anxiety and stress can subvert your performance.

Resveratrol not the cure-all we thought it was.

Tracing the origins of Connecticut’s Milk Ban

For years, an underground movement has claimed that the very food we eat—by virtue of the pesticides and herbicides we so commonly use—is poisoning us. Until now, they’ve been (at best) ignored and (more often than not) mocked. Suddenly though, it looks like the joke has been on us all along.

It's never too late to start training, just keep at it

Study finds correlation between lack of exercise and deficient long-term memory.

Microbes in your stomach support the multi-billion-dollar probiotics industry, your workout, and possibly even your sex drive.

Why runners need to pay more attention to their hearts

New research suggests that some of the physiological benefits of working out outside can be mimicked by adaptions to an indoor routine.

�����ԹϺ��� and Greenfield chew the fat about locally sourced food—and learning to grow and hunt your own.

Scurvy set into Wilson Price Hunt's party until the Shoshone mega-dosed his explorers on their super-high-C "bush" remedy.

If you've been fruitlessly spinning your creative wheels you might want to take a cue from Stanford University researchers and try getting out on your feet instead.

Drugs that affect hormones have the potential to cause all kinds of screwy side effects in the body—but fortunately, there’s not much evidence that medications like birth control or antidepressants will slow you down on the track or impede your progress in the gym. In fact, some research shows…

At last, researchers may have a tool to diagnose the little-understood and controversial post-treatment Lyme disease syndrome.

More is always better, right? Well, maybe not. Ultradistance runners have been warned that their mileage isn’t exactly healthy. But they aren’t the only ones who should be thinking about the long-term ramifications of their training.

More people die from opioid overdoses than car crashes, and Zohydro is one of the strongest yet to hit the market.

Couch potatoes everywhere were overjoyed to learn—courtesy of a recent study—that running is actually dangerous. But a closer look at the science suggests the smirks are seriously misguided.

Over, under or somewhere in between, your weight may not be as unhealthy as you think

Coffee can supercharge your workout, save your liver, and fight depression. So go ahead and pour yourself a second cup.

Poo-phoria occurs when your bowel movement stimulates the vagus nerve, which descends from the brainstem to the colon.

A Bluetooth puzzle for your pup

Take a break from winter in a mineral bath that will soothe your soul.

In a perfect world, we'd get plenty of both. But this is reality—and we have to choose. But can science really balance sleep against training?

Can you sense the weather in your joints? Here's why that happens.

“There are a lot of reasons why your body changes as you get older,” says Dr. Patrick Siparsky, an orthopedist at the University of Toledo, and lead author of a recently published paper on sarcopenia, the age-related decrease in lean body mass. “You don’t get as much…

Knowing what to eat and when

Cleanses, specifically store-bought ones, are almost always bunk. No weeklong celebrity cayenne pepper diet or colonic lemonade spritz can rid your body of the gunk you’ve been exposed to—from alcohol and nicotine to pesticides and air pollution—says Mark Moyad, a urologist at the University of Michigan. Luckily, you’re already equipped…

Jamaican jerk chicken fuels America's Olympic dreams

Exercising consistently is the best thing you can do for your brain

Never mind the health and environmental benefits. It’s good for the soul.

Cherish the silence of your sleeping time. Nocturnal noises negatively affect endurance and lead to health complications.

Finally, all the performance enhancing nutrition items you need, delivered

Headed around the world for some cheaper medical care? Follow these rules

There’s a number that controls your fitness destiny. And odds are you’re not doing enough to improve it.

How the Stanford physiologist is trying to change the hydration game

Sugar has become a trillion dollar health care problem. But are athletes at risk?

Sometimes, what's common knowledge doesn't need scientific validation. Listen to the advice of these two legendary athletes and remember that even the strongest of us need a little rest and relaxation.

Need to manage your cholesterol while you exercise? Think twice before taking statins.

Juicing is the biggest thing to happen to endurance sports since interval training. Time to hop on the bandwagon.

Can you lose weight just by downing a glass of water before dinner?

The formula to weight loss is simple: eat less and exercise more. So why are these simple things so impossibly hard to do?

There's scant evidence for the effectiveness of most supplements. But here are a few to consider—and a few to shy away from.

Paleo diets are supposed to be bad for your endurance. What if they aren't?

Is there something special about the physiology of ultra-distance athletes and what can we learn from how they train?

The debate is on: just useless, or truly dangerous?

We're told to exercise to stay fit and healthy, but sometimes training routines turn deadly.

Exercise isn't enough. To remain healthy, you need to build athleticism. Here's how.

Not all celebrities are train wrecks. Sometimes, they're perfect examples of what we all should be doing to stay healthy and happy.

Are you taking too many pills? New studies question the vitamin gospel.

How to take care of your body as an aging athlete

There’s nothing like an attack by flesh-eating bacteria to get your midlife priorities straight

I have a giant stick of Old Spice that seems like it’s never going to run out. I think I’ve had it for four years. I don’t see an expiration date, so does it still work? Does deodorant expire?

Getting older doesn’t have to mean getting slower. Not with a leg up from the frontiers of science.

We know too much time spent on the couch is deadly, but what about the hours you spend in the saddle or on the trail? Is there really such thing as too much exercise?

Interval training is no longer the secret of the pros, but that doesn't mean you're doing it right

Forget about the wonder drugs. The elixir of youth and the "cure" to Alzheimer's and dementia may turn out to be exercise.

A few simple exercises can cure plantar fasciitis

The weight-loss industrial complex keeps pumping out diets, but a new study suggests it's time to radically rethink our approach to eating—and refocus on the basics

A new look into the numbers suggests that some heavy coffee drinkers are more than twice as likely to die as their peers. Should you be worried?