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

Follow along with trainers Jacqueline Kasen and Gerren Liles in the workout video above, or if you're ready to HIIT it solo, read the instructions below for a self-guided workout.

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

It can also improve your performance in sports, because a HIIT workout engages your entire body. But to get the benefits of HIIT, you need to be ready to work hard. A true HIIT session involves ...

Boxercise has been around since 1992, and it's picking up steam again. Level up your workout routine with this high-intensity ...

IF YOU’RE LOOKING for a style of workout that will push you to your limits without needing to exercise for hours, you only need to understand one four-letter acronym: HIIT. The term stands for ...

HIIT, or high-intensity interval training, includes bursts (typically 30 seconds to a few minutes) of sharp exertion followed by a rest period. According to experts, HIIT workouts create a ...

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Founded by former Fitbit executive Lindsay Cook, the platform offers free videos for yoga, cardio, Pilates, barre, HIIT, dance, strength training, stretching and more, including classes that are ...

One of the most popular benefits of HIIT is the “after-burn effect.” This type of exercise stokes the metabolism, increasing calorie burn during the workout — and it stays elevated after the ...