Sprinting can deliver the benefits of an hour-long workout in just a few minutes. Unlike steady-state running, Sprinting is ...

Lack of time is often the main reason people don't exercise regularly. But a type of interval workout recently popularized by ...

High-intensity interval training, or HIIT, is a great way to get in a fast, effective workout. This quick routine is helpful ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." In a small study, sprint interval exercise helped to “clean-up and rebuild” cells better than ...

We all need a "Zone 2" day -- a low-impact, low-intensity workout -- once in a while. This is especially true for those who find it hard to skip workouts and often push themselves to the extreme.