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 ...

HIIT WORKOUTS DEMAND that you give your all. You might find that you have a hard time pushing to your limits on your own—so you'll get closer to achieving your goals when you have a world class coach ...

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.

Discover how Dance HIIT workouts combine fun choreography with high-intensity intervals to maximize calorie burn, boost ...

Prepare to dial up the intensity in this Upper Body Realness workout. In it, you’ll increase the challenge of each exercise by layering in a second movement, like by adding crunches to close-grip ...

HIIT recovery periods can be active ... or reduce the duration of rest periods in subsequent workouts. Here’s a progression of the program above: ...

Today we're going to do a High-Intensity Interval Training workout, or HIIT, H-I-I-T ... once or twice a week to change up your regular routine on some days. Now, this workout is so intense ...

At 68, Orangetheory founder Ellen Latham has bounced back from two knee replacements and isn't slowing down, thanks to ...

Originally often catered to super athletes or those looking to become them, "a few years ago, CrossFit rebranded and incorporated a more sensible approach to fitness for a broader range of people," ...

He says the program incorporates elements of weightlifting, plyometrics, aerobic exercise, gymnastics, high-intensity interval training (HIIT), kettlebell drills, calisthenics and strongman exercises.