They’re running themselves ragged — and possibly fast-tracking Father Time. Ultramarathons are surging in popularity, with ...

Extreme endurance running damages red blood cells in ways that may affect their ability to function properly, according to a ...

Extreme heat makes it especially hard for your body to cool down, so you need to be extra careful if you exercise or play sports when it’s baking outside. 2-month-olds see the world in a more complex ...

Elite athletes who have run a mile in less than 4 minutes tend to live longer than the general population, according to a retrospective study. The study adds to a growing field of research ...

Extreme heat makes it especially hard for your body to cool down, so you need to be extra careful if you exercise or play sports when it’s baking outside. Your brain tries to keep your body within a ...

Moderate exercise is good for the heart, but high levels of exercise can cause a phenomenon known as "athletic heart," which comes with risks. When you purchase through links on our site, we may earn ...

Extreme runners may have a higher risk of precancerous colon lesions, according to a study that's recently drawn attention thanks to social media chatter and a New York Times article. At the recent ...