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Nike Training Club – 30 Minute Workouts – Season 1 features high-energy interval training sessions designed to maximize fitness gains in just 30 minutes. Each workout includes short, intense bursts of ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you’re looking for a new way to do cardio, swimming is surprisingly effective—and a total body burn.

If you're not a triathlete or competitive swimmer, swimming laps may not be the first thing that comes to mind when you think of cardio. But jumping into a pool is definitely a worthwhile workout to ...

The leg workout of the week starts with a warm-up mixed with jogging, calisthenics and dynamic stretches. Much of the workout consists of running speed intervals and leg/core exercises. The end of the ...