You can do cardio intervals just about anywhere, as we’re discovering during this month’s fitness challenge: your living room is a classic, or you can hop on a bike or lace up your running shoes. But ...

Runners can easily fall into a basic routine for their workouts: Lace up, hit the pavement, then cruise at a comfortable pace ...

Interval running exercises are basically one of the best ways to improve your speed. These workouts allow you to practice running fast for a brief period of time, then recover and repeat. Over time, ...

What Is It: Speedplay is a 60-minute high-intensity interval training class that combines running, rowing and floor exercises to burn up to 900 calories per session. Who Tried It: Gabrielle Olya, ...

Sprint interval training, or SIT, is super trendy right now. It’s a great way to improve your running speed and to get in a hard interval workout, and I’ll explain exactly how. But I also need to ...

LAGUNA NIGUEL, Calif. (KABC) -- These people are talking about a new class called FIRE. "It's such a great, explosive workout. You get everything fit in an hour," said Melanie Reed of Laguna Niguel.

The fashion world's favorite barre brand just introduced Physique F.I.T., a fast-moving class that focuses on the arms and seat and includes way more cardio, too. Get ready to fight the fashion set ...