High Intensity Interval Training, HIIT Guide

Skip navigation!

Begin Slideshow

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

Lululemon’s Gift Shop Is Here: 24 Styles To Give This Holiday Season

All linked products are independently selected by our editors. If you purchase any of these products, we may earn a commission. This holiday season, we’v

by Karina Hoshikawa

The 21 Best Gym Bags For Your Workout Essentials

In A World That Demands Women Shrink, Weight Lifting Taught Me Th...

When I joined a gym last year, I was searching for a way to process my anxiety and reduce risk of injury from long-distance running. My goals were modest:

by Prachi Gupta

Workout Clothes

16 Workout Dresses Making A Case For Active (& Inactive) Wear

by Karina Hoshikawa

17 Workout Crop Tops For When It’s Absolutely Too Hot For Shirts

Lululemon’s New Arrivals Are Here — But Won’t Stay In Stock For Long

by Karina Hoshikawa

Workout Clothes

19 Pairs Of Workout Underwear For Your Sweatiest Gym Days

So, How Is It Really?

So, How Is It Really? Running A 5K At Disney World

All linked products are independently selected by our editors. If you purchase any of these products, we may earn a commission. Welcome to Refinery29’s S

by Karina Hoshikawa

ClassPass Isn’t Just For Workouts — Here’s How I Maxi...

At Refinery29, we’re here to help you navigate this overwhelming world of stuff. All of our market picks are independently selected and curated by the ed

by Karina Hoshikawa

From Align To Wunder, These Are The Best Lululemon Cyber Monday S...

At Refinery29, we’re here to help you navigate this overwhelming world of stuff. All of our market picks are independently selected and curated by the ed

by Karina Hoshikawa

The Oura Ring Is The Ultimate Wellness Splurge — Here’s Our...

At Refinery29, we’re here to help you navigate this overwhelming world of stuff. All of our market picks are independently selected and curated by the ed

by Karina Hoshikawa

Pickleball Accessories & Gifts Cute Enough To Make You Start Playing

Pickleball is currently America’s fastest-growing sport, bringing in everyone from tennis aficionados to first-time racket game enthusiasts and becom

by Victoria Montalti