The hallmark of HIIT is repeated bouts of extremely hard work interspersed with periods of recovery. During your work intervals, you’ll be pushing yourself nearly to your max, Noam Tamir, CSCS, ...

In TODAY.com's Expert Tip of the Day, a trainer explains how incorporating HIIT into a weekly workout routine can boost one's ...

HIIT workout founded by a Japanese Olympic coach that uses periods of intense exercise and rest to burn calories.

While the past few years have seen the rise (and rise) of low-intensity workouts, like Pilates and yoga, grow in popularity, there’s still a very valid case for adding in some high-intensity interval ...

High-intensity interval training (a.k.a., HIIT) is a triple threat: “It’s quick, easy, and effective,” says Angela Gargano, a certified trainer and creator of Strong Feels Good & Pull-up Revolution.

Participation in once-popular HIIT workouts is flagging. But experts say it’s still one of the best types of exercise you can do.

We all grow older. There is nothing we can do about that, but the quality of those years is within our control, as recent ...

Torch your muffin top with 9 expert-backed HIIT moves that burn fat, boost metabolism, and sculpt your waist in 15 minutes.

You can reap the many health benefits of HIIT by exercising for a shorter — yet more intense — period of time.

"Plan for one upper-body, one lower-body and one full-body strength session per week, lasting 35 to 45 minutes each. Any more ...

New research from Edith Cowan University shows that a single bout of weight training or HIIT can boost anti-cancer myokines and reduce breast cancer cell growth in survivors.