Sign up for a Women's Health+ Premium membership now to unlock the exclusive Ultimate HIIT Challenge, unlimited access to ...

But to get the benefits of HIIT, you need to be ready to work hard. A true HIIT session involves short bursts of intense ...

In less than 20 minutes, you can sculpt your arms and abs with this upper body dumbbell workout, all while getting your heart ...

Start getting stronger and sweat smarter with this fast-paced lower body bodyweight workout, which is part of the Women’s ...

Edwards packs 4 rounds of 10 exercises into this 30-minute HIIT-style workout, with brief “active break” periods between each round. All of the exercises take 30 seconds followed by 10 seconds of rest ...

Discover how this comprehensive 7-day HIIT program maximizes fitness gains through expert-designed workouts and evidence-based recovery strategies.

or HIIT, H-I-I-T. What we'll do is 20 seconds of an exercise, pushing as hard as you can, then taking 10 seconds' rest. We'll repeat that eight times, so the whole workout will take only four minutes.

Dance it out and sweat with this cardio combo featuring body rolls, squats, and plenty of high-impact exercise.

A typical SIT workout begins with a five-minute light cardio warmup to condition muscles for activity, followed by a maximum ...

Watch this video to find out our experience and more. For most people, finding the time to exercise can be a challenge. HIIT offers a workout that can be completed in a fraction of the time.