HIIT is not the only or the best way to improve your cardio endurance and heart health. Steady, repeatable exercises can ...

Plus, the surprising benefits of turning the intensity down a notch.

They’re so easy to incorporate into your week.

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 ...

UNLESS YOU'VE BEEN living under a weight rack for the past decade, you’ve heard of HIIT. Short for high intensity interval training, the protocol involves alternating short bouts of all-out effort ...

If you had to pick the better runner — a sprinter or a marathoner — the answer would depend on the type of race. In a 200-meter race, the sprinter will have an edge over the marathoner, but if it ...

Hedy Phillips is a freelance lifestyle writer based in New York. While she's not writing on topics like living on a budget and tips for city dwelling, she can usually be found at a concert or ...

"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 ...

Cardio is more than just running laps or hopping on a bike. It's any movement that gets your heart pumping, your body sweating and your energy levels soaring. Whether you're chasing a weight loss goal ...

Welcome to Class Fitsugar's newest season! We're back in the studio, and our new trainer Natalie White will be leading you through a 30-minute cardio HIIT workout, joined by Paulyn Baens and Maya ...

Walking? Lifting weights? Does it matter what zone you’re in? I have answers.

Swimming is a low-impact workout that also targets multiple muscle groups. “In just 30 minutes of swimming, an average person ...