Crush Calories

Preventing too much holiday cheer from settling on your waistline comes down to simple calorie math: If you want to indulge in a few extra calories, you'll have to sweat off a few more than usual.

Send 'em packing with these four explosive moves created by Kim Blake, a trainer at Nike World Headquarters Sports Center in Portland, Oregon. You'll push your body weight off the floor and then absorb it when you land. Translation? Your muscles will work hard, and you'll blast fat.

Get your perfect body with these crazy-fast calorie crushers!