If you’re pressed for time and want to work your entire body, we've got the perfect sweat sesh for ya. This full-body HIIT (or, high-intensity interval training) workout will get your heart rate up ...

Rockstar Equinox trainer and fitness model Julie Wandzilak shares an at-home workout that'll elevate your heart rate, boost your brain power, and burn calories. The holidays might be the most ...

Perfect for all fitness levels — this 20-minute HIIT workout combines power and endurance to sculpt your body fast! #KettlebellHIIT #HomeWorkout #FatBurn #BeginnerFitness #FullBodyHIIT ...

That HIIT workout routine is upping your cortisol (stress) levels. The head of research at Les Mills wants you to keep it under 40 minutes per week. “Cortisol is not particularly a ‘bad’ hormone, it’s ...

Forget hours running on the treadmill or the elliptical machine at the gym — if you’re short on time and looking for a way to torch calories, you’re better off doing a quick HIIT workout. You don’t ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Want an exercise program that helps you work out smarter, not harder? You've found it. The Women's ...

Workout trends come and go, but when it comes to the biggest bang for your buck, high intensity interval training, or HIIT, has staying power. HIIT’s specific origins are uncertain; some say it dates ...

Join yoga instructor Sophie Jaffe for a 20-minute HIIT Vinyasa class that will add an extra cardio element to your yoga practice. In this routine, you'll start with a gentle Vinyasa flow to warm ...

If you’re looking to add some kick to your workout and save time while doing it, it’s probably time to try a 15-minute HIIT workout. “HIIT, or high-intensity interval training, essentially means you ...