Experts discuss the small but promising study.

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

Lindsey Vonn’s latest training video sends a clear message. Even after an ACL injury, the skiing legend is still grinding and ...

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.

During the study, participants tracked and reported how much time they spent exercising each week. They categorized the workouts, recording time spent walking, jogging, biking, rowing, playing racket ...