High-intensity interval training, or HIIT, is a great way to torch calories, boost your metabolism and get a great workout in a shorter amount of time. And if you're a fan of hopping on the treadmill ...

This 15-minute boxing HIIT workout combines punches, movement, and intervals for full-body conditioning. The routine is designed for home training with minimal equipment. A quick and effective option ...

Steady-state cardio may be more helpful for beginners looking to manage their weight, while HIIT is a great way to boost ...

Advanced kettlebell HIIT combines explosive strength work with high-intensity cardio for a demanding full-body workout.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Want an exercise program that helps you work out smarter, not harder? You've found it. The Women's ...

For many people aiming to burn a lot of calories, high-intensity interval training is the way to go. Also known as HIIT, these popular workouts feature bursts of intense activity, such as squats or ...

As HIIT's popularity soars, sprint interval training, or SIT, is doing its best to catch up. Can shorter, harder, faster deliver better results? As the popularity of HIIT continues to soar, sprint ...

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

Presented by Athleta, this HIIT workout is basically a guaranteed confidence boost. Celebrity trainer Amanda Butler leads you through two different rounds of full-body interval training, helping you ...

We're definitely fans of exercise snacking, but sometimes nothing but a long, sweaty workout will do — and if that's what you're craving, this 45-minute high-intensity interval training workout with ...

If you don't have a ton of time to exercise and want to make the most of the few minutes you're able to squeeze in, HIIT workouts are for you. There are minimal rests during HIIT workouts, and even ...

Every so often, a new type of workout seemingly takes the fitness world by storm. The latest in this long line of buzzy fitness fads: the Norwegian 4x4 workout, a high-intensity interval training ...