Those mid-class sprint intervals are tough. But experts break down whether they really get you ready for race day.

High-intensity interval training (a.k.a., HIIT) is a triple threat: “It’s quick, easy, and effective,” says Angela Gargano, a certified trainer and creator of Strong Feels Good & Pull-up Revolution.

If you've bought into the hype and you don't need to do anything other than High-Intensity Interval Training (HIIIT) to stay healthy and fit, there’s a good chance you're missing out on your goals and ...

High-Intensity Interval Training (HIIT) alternates short bursts of near-maximal effort with periods of rest or low-intensity ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The minute I stepped into Housework, a house music-inspired workout studio in New York City, I knew my ...

Remember the buzzy boutique fitness classes that soared in the mid to late-2010s? There was a time when you couldn’t skim a stone down 23rd Street in Manhattan without it ricocheting off three ...

The cardio world has split into two passionate camps that argue with the intensity of people debating pineapple on pizza. On one side, you have the HIIT devotees who swear by short, brutal workouts ...

But if you find yourself wondering, "What is HIIT?" as in, what is an actual HIIT workout like, these pro tips from certified trainers who specialize in teaching the technique will help you crush your ...

Sprint interval training can improve aerobic capacity, anaerobic capacity, speed and power, says Stone, and the research ...

HIIT safely improves aerobic capacity and muscle endurance in newly diagnosed inflammatory muscle disease patients.

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? The minute I stepped into Housework, a house music-inspired workout studio in ...