True story: You don't need a lot of time to squeeze in a decent sweat sesh. In fact, research shows that high-intensity interval (HIIT) workouts that last for as little as 10 minutes are more ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." As a physical therapist and strength and conditioning specialist, I’m all about finding fitness solutions ...

What Is It: Training Mate is a HIIT circuit training class founded by Luke Milton, a celebrity trainer and former captain of the Australian Rugby team. Fans of the class include Freida Pinto, Jesse ...

The key to great circuit training is to use only major muscle groups. Each exercise must use many joints at one time. One must move exercise to exercise rapidly to force the body to move blood from ...

New workout trends crop up all the time—some, like HIIT and circuit training, catch on for the long haul. Both of these modalities get your heart pumping and your muscles burning, making them the ...

From her new book, this is the Jillian Michaels workout that increases your longevity, metabolism, and vitality—meet metabolic circuit training. Plenty of fitness modalities have come together to ...

Build muscle and strength after 55 with this fast 12-minute bodyweight circuit that targets your legs, core, and upper body.