Presented by Athleta, this HIIT workout is basically a guaranteed confidence boost. Celebrity trainer Amanda Butler leads you through two different rounds of full-body interval training, helping you ...

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 ...

Ready yourself for this full-body 30-minute workout that combines Pilates, HIIT, strength, and cardio for a workout that will keep your body guessing. When it comes to carving out time to work out, ...

Interval training is great for boosting cardiovascular endurance and promoting overall fitness. Our fitness expert, Judd NeSmith, NASM-CPT, PES and founder of Serious Fitness, explains interval ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." IF YOU’RE LOOKING for a style of workout that will push you to your limits without needing to exercise ...

A personal trainer explains how combining strength training and cardio creates better fat loss and a leaner physique ...

Well, after a six month hiatus during which I was abroad in moldy England, I have returned to Tufts, ready to continue doing what I love: dispelling those asinine fitness myths that have propagated ...

There may, however, be a shortcut. High-intensity interval training ( HIIT) promises to get you fit with just a few minutes ...

If you're combining two types of training into a single workout session, you should (usually) do it like this.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Fun fact: When working out on a rowing machine, you engage up to 86 percent of your muscles at once.