Ultra-endurance athletes can push their bodies to extraordinary extremes, but even they run into a hard biological wall.

We’ve tested countless fitness-related items and debated the pros and cons of various workout gear to bring you the best ...

"Want to get stronger and boost your endurance at the same time? In this video, you’ll learn the easiest way to become a ...

Ellsworth High's indoor track and field team will be training at Downeast CrossFit once a week thanks to a collaboration ...

Larsen’s research on ITCs as natural performance enhancers found, across multiple studies, that they reduced blood lactate by ...

Use a treadmill or outdoor space to perform a 400-meter jog. Maintain a steady, moderate pace, enough to challenge you but not gas you out. Keep your shoulders relaxed and let your arms swing ...

Is there a limit to the number of calories you can burn? What about when you’re doing endurance exercise like a triathlon?

Humphrey traveled from Michigan to Chicago to seek a second opinion at Northwestern Medicine in May 2024. A bronchoscopy ...

With its extreme heat and challenging landscapes, Abu Dhabi is positioning itself as a distinctive destination for endurance sports.

Swimming might be his strength, but this test pushed him way beyond the pool. The Navy SEAL screening revealed just how ...

The TV star keeps in Ironman shape with weights, trackers, daily saunas and ice baths — and plenty of double espressos ...