Experts share the best types of interval training to help you improve both as a long-distance runner and an all-around athlete.

The fitness boot camp craze is evolving. It's no longer just the crack-of-dawn, sergeant-led calisthenics classes. Mommy Bootie Camp in Kensington, Md., packs a lot of punch, with a focus on interval ...

A new study suggests that HIIT workouts may help preserve lean mass in older adults compared to moderate exercise—but changes ...

Many runners strive to get faster, and boosting VO2 max is often part of that goal. One way to achieve both: The interval ...

Come rain or shine, a good treadmill workout is all you need on days when getting outside doesn't appeal ...

There’s a lot of talk in the exercise world about high intensity interval training (HIIT) lately, which is exactly what it sounds like — alternating episodes of exercise with periods of less intensive ...

High intensity interval training (HIIT) may be the most effective form of exercise for reducing body fat while maintaining ...

A HIIT workout can be tricky to define because, at its core, it just means a string of exercises that gets your heart racing, providing a cardio boost to what would otherwise be a serviceable, but ...

For patients with rheumatoid arthritis, high-intensity interval training (HIIT) and strength exercise are beneficial for cardiovascular health, physical fitness, and overall health, according to a ...

If your workouts are mostly high‑intensity interval training, group classes, and dynamic movements, the Nike SuperRep 3 ...