Treadmills are a great way to get in your daily dose of cardio, but walking or running to nowhere isn’t always a very thrilling idea. For fitness enthusiasts who need a little cardio variety, HIIT (or ...

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!

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 ...

No time to hit the gym? No problem. A good workout doesn’t always have to take place surrounded by a ton of iron anyway (as you’ll soon discover). This 20 minute HIIT workout will not only smoke your ...

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 ...

In simple terms, the 30-20-10 workout involves 30 seconds of low-intensity activity, 20 seconds of moderate-intensity ...

Join instructor Sina Riemann for a 20-minute HIIT Pilates class. Riemann incorporates elements of pilates, strength training, and high-intensity cardio for a short but effective workout that's perfect ...

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 ...

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 ...

In TODAY.com's Expert Tip of the Day, a trainer explains how incorporating HIIT into a weekly workout routine can boost one's metabolism and help with weight loss.