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

But HIIT is tricky because, as Paul Laursen, Ph.D., co-founder of HIIT Science points out, there are so many different workouts that people refer to as HIIT. Bootcamp-style workout classes like ...

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 ...

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 ...

Torch calories and sculpt your legs with this high-intensity dumbbell HIIT routine! No gym needed — just grab your dumbbells ...

In the same way that all bodies aren’t the same, not every workout is meant for every person. High-intensity Interval Training (HIIT) has long been touted as the ultimate fat burner, with a high ...

If cardio seems more like a chore and less like a fun sweat session, this 10-minute HIIT workout can help you switch it up. Presented by Allegra, this high-energy routine is a quick way to get your ...

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 ...

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

You can always rely on a high-intensity workout to leave you feeling sweaty and exhausted. But a longer workout isn't necessarily better. And a new approach that's gaining fans on social media only ...

If you’re looking to kick your training regime into top gear, a treadmill pace chart could be one of the best tools for you ...