Step one: Sign up for your WH+ Premium membership ... The program includes HIIT workout days, active recovery days with optional steady-state cardio or yoga, and a group fitness day.

Today we're going to do a High-Intensity Interval Training workout, 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.

Kickstart your metabolism and burn more calories all day with this simple morning routine. Find out how to maximize your energy from the moment you wake up.

Start getting stronger and sweat smarter with this fast-paced lower body bodyweight workout, which is part of the Women’s Health+ Ultimate HIIT Challenge. In just 20 minutes, you'll burn a ton ...

SIT is, in fact, a type of HIIT. Sprint interval training refers to exercise routines where you run as hard as you possibly can (or nearly as hard) for a short time, typically 30 seconds.

While the primary goal is to build strength through exercises like squats, lunges, and rows, the quick transitions between ...

And when it comes to working out, it seems we're partial to going retro too: indoor step workouts are trending again. If you'd packed your legwarmers away with your trusty Jane Fonda workout video ...