The Everything Guide To HIIT

Wondering what all the HIIT hype is about? Named one of the top two fitness fads in 2014 by The American College of Sports Medicine, the notoriously tough exercise method has become the darling of personal trainers and other fitness experts. But is all that huffing and puffing really worth it? Here, your beginner's guide to HIIT training.

More from Fitness

Watch

R29 Original Series

Watch Now
Documentary
Five love stories behind diverse, multicultural marriages.
Watch Now
Lifestyle
Life experiments, 5 days at a time.
Watch Now
Fashion
The style of subculture.
Watch Now
Beauty
Viral trends, tried and tested.
Watch Now
Documentary
From vibrators to lipstick, learn how your favorite products are made.
Watch Now
Documentary
Extraordinary, one-of-a-kind individuals
Watch Now
Documentary
The latest stories to watch.
Watch Now
Lifestyle
Inside the homes of millennial women — & what they paid for them
Watch Now
Comedy
Let's talk about sex, baby.
Watch Now
Documentary
Female artisans around the world
Watch Now
Politics
Made by and for smart, opinionated women.
Watch Now
Film
We helped 12 female directors claim their power.