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

When it comes to getting enough exercise, everyone searches for something that speaks to them. Some people love the quiet solitude of jogging alone while others prefer the competitive element of team ...

Sculpt and strengthen your lower body with this fast, effective 15-minute kettlebell HIIT workout. Build leg power, torch ...

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

Sheehan echoes similar sentiments. "The intensity is what matters, not the clock. A focused 10-minute HIIT workout can spike ...

This month we will be alternating between HIIT walks and a simple HIIT routine that uses just your bodyweight to get your heart rate up. On days when we’re doing walking workouts, you have three ...

This Halloween, forget the tricks — it’s all about the treats for your body! Planet Fitness is showing us a Haunted HIIT ...

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 packs as much intense energy as possible into as little time as possible. And the method's producing mad results. A Metcon3 class at Equinox torches calories during class—and after thanks to High ...

Like other HIIT workouts, the Norwegian 4x4 consists of brief spurts of high-intensity exercise interspersed with active ...

The cardio world has split into two passionate camps that argue with the intensity of people debating pineapple on pizza. On one side, you have the HIIT devotees who swear by short, brutal workouts ...

REHIT is also ideal for people who are experiencing a weight-loss plateau, Mansour says. If you do a lot of high-intensity workouts without much rest, you're likely taxing your body more than you need ...