HIIT workout founded by a Japanese Olympic coach that uses periods of intense exercise and rest to burn calories.

We all grow older. There is nothing we can do about that, but the quality of those years is within our control, as recent ...

Tabata workouts are short, intense exercises that require pushing yourself to the limit. Here's how to do Tabata-style exercises at any fitness level.

Like other HIIT workouts, the Norwegian 4x4 consists of brief spurts of high-intensity exercise interspersed with active ...

The hallmark of HIIT is repeated bouts of extremely hard work interspersed with periods of recovery. During your work intervals, you’ll be pushing yourself nearly to your max, Noam Tamir, CSCS, ...

The Secret to Riding Faster Isn’t Always More Time. These Quick, Indoor-Trainer Workouts Prove It.

I first tried the Norwegian 4x4 workout a year ago, and since then, it has become a staple of my fitness routine. I don't do it every week (some folks do), but it's a workout I keep returning to ...

MARTIN: Well, in the world of professional sports and fitness, people talk about training zones as sort of spectrum of intensity from light exercise to really huffing and puffing - sounds like that ...

Previously inactive people who started lifting weights showed significant changes in their gut bacteria within eight weeks.

Understanding your heart rate is crucial for more than just reaching optimal fitness–it can also help to reduce injury and ...

A groundbreaking Australian study reveals that fitter individuals actually use fewer heartbeats each day than their sedentary counterparts, dispelling the myth that exercise "uses up" heartbeats.

The Illusion of “Harder is Better” Scroll through social media, and you’ll see no shortage of impressive stunts - one-legged overhead squats on a wobbling BOSU ...