Run 30 seconds hard at your VO₂ max pace. Follow that with 30 seconds of very easy running (with the short interval, your ...

For your speed workout, try a fartlek run/walk: After a walking or easy running warmup, run hard for 30 seconds or as long as ...

Find ultramarathon training plans and guidance from beginners to advanced. Learn how, when, and where to train to make the ...

A recent study from Australia suggests that high intensity interval training may be optimal for body composition in older adults, by helping to lose fat while preserving muscle.

HIIT can help improve speed and power, but longer, steadier workouts that you can do regularly, like swimming and rowing, are ...

Celebrity fitness trainer Donovan Green demonstrates a quick 7-minute HIIT workout. Get your heart pumping with this high-intensity interval training session! Bills owner made call to fire coach in ...

High intensity interval training (HIIT) may be the optimal exercise for reducing body fat while maintaining muscle mass in older adults, according to new research led by UniSC academics.

Is movement the secret to achieving a more youthful complexion? Dermatologists explain.

These common mistakes explain why hybrid training often fails — here’s how to fix it ...

Jessie Diggins has become the best-ever American cross-country skier because of what she pushes her body through.

To use Workout Buddy during a session, open the Workout app on your Apple Watch. Turn the Digital Crown to scroll through and ...