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

You've found it. The Women's Health+ Ultimate HIIT Challenge is a week-long program that combines high intensity interval training workouts, steady-state cardio sessions, and active recovery ...

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.

Want to make the most of your HIIT workout? Here’s how to nail the perfect circuit, according to Strong Women ambassadors Emma Obayuvana and Caroline Bragg. Most of us are still working from ...

But I also need to clear up this silly question about whether it’s “better than” HIIT (or high-intensity interval training). SIT is, in fact, a type of HIIT. Sprint interval training refers ...

Because the best HIIT workouts aren’t meant to last longer than 30 minutes or so, they’re mega efficient for honing your muscles. No gym? No sweat. (Actually, there will be lots of sweat.) ...

Jumping out of bed and straight into a HIIT workout without food first could be a problem for performance and hormonal health. HIIT requires huge amounts of energy to get through powerful moves as ...