Yahoo Sports Daily hosts Caroline Fenton and Jason Fitz react to Lindsey Vonn posting a video of her performing an intense ...

The 'Buffy the Vampire Slayer' star brought fans along for a busy day in her life.

Nicole Scherzinger shared an intense workout clip on Instagram, admitting she almost quit “halfway through” before pushing to ...

Plus, the surprising benefits of turning the intensity down a notch.

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Sprint interval ...

Exercise is known to benefit heart health. High-intensity interval training (HIIT) that combines aerobic exercise with ...

The goal is to start your day with protein and exercise. Here's what happened when one writer tried it for two weeks straight.

Boost your endurance and strength, all at once.

Tom Hiddleston’s fighting and chasing scenes from ‘The Night Manager’ season 2 are one of the biggest USPs of the show, but ...

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 ...