Lack of time is often the main reason people don’t exercise regularly. But a type of interval workout recently popularised by ...

Get ready for a super sweaty 20-minute HIIT workout—all standing, no jumping, and no equipment required! This high-intensity ...

New research shows the 4x4 workout format can improve fitness faster than traditional workouts, such as jogging or cycling ...

Burn fat, build strength, and boost endurance with this 15-minute Tabata HIIT workout using weights! A full-body routine ...

Exercise snacks’ might be only brief bursts of physical activity, but they can have huge benefits for your health.

Outdoor winter exercise is no joke. Fitness specialists explain what to wear—and how to wear it—when training out in the cold ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

Anna McGee shares insights on aging well through strength training, inspiring women over 45 to stay active and independent.

I saw—and felt—palpable strength improvements from completing four weeks of this program. I started with lighter weights than ...