With only 20-minutes of workout time to spare, I highly suggest clicking on HIIT YouTube workouts. You can train at max energy and burn more calories in less time — plus, it takes minimal effort to ...

HIIT (high-intensity interval training) routines are always tough, but outdoor HIIT running workouts are on another level. "Performing high intensity intervals will require you to dig deep and find ...

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 ...

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 ...

Rhys and Amy take us through a 20-minute HIIT bodyweight workout. This workout consists of a skater to jump squat, a triple climber, an alternating reverse lunge, a single leg glute bridge to sit-up, ...

You want a ripped, chiseled core, the kind that looks great when you take your shirt off, and also lends you stability and strength in all situations. And building that core is a two-step process.

"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 ...

Chances are you’ve heard of HIIT workouts — but you may not know exactly what that means. And even if you do, maybe you’re looking for a fresh routine that you can sneak into your day. We’ve got you ...

Sometimes it’s best to keep it simple with your workouts, because if you can just find the motivation to move for 20 minutes on any given day, you’ll be helping to improve your physical fitness and ...

Amy and Rhys take us through a 20-minute lower body workout with a tabata finisher. This workout consists of a squat to lunge, a plank to opposite toe touch, an around the world squat, a lateral lunge ...