Imagine driving a car and constantly switching between the gas pedal and brake. You waste a lot of fuel, which is a great way to slim down. And unlike steady exercise, which mostly builds endurance, ...

High-intensity interval training (a.k.a., HIIT) is a triple threat: “It’s quick, easy, and effective,” says Angela Gargano, a certified trainer and creator of Strong Feels Good & Pull-up Revolution.

ESPN has reportedly issued an official "Code Red" warning to top talents like NFL host Laura Rutledge and NFL analyst Dan ...

Cardio is more enjoyable when you can take a run in a beautiful location or take your time riding your bike around. However, that's not always an option. This is why high-intensity interval training ...

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." WHETHER YOU'RE A group fitness junkie or just exercising to be healthy and active, you've doubtlessly ...

As women enter their 40s and beyond, hormonal changes can make it harder to build muscle, maintain energy, and manage body ...

High-intensity interval training, also known as HIIT, is a great way to improve your overall cycling performance. Working through short bursts of intense efforts, followed by brief rest periods, can ...

So consider this your guide to make sure you’re not overdoing it on intensity—and that the HIIT work you are conquering actually pays off. We spoke to HIIT researchers and cycling coaches to find out ...

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 ...

If dragging yourself to the gym feels like a chore, the issue might not be motivation, but misalignment. Matching your workout to your personality type could be the missing link to making exercise ...