Celebrity Shape-Up

TRY IT Warm up on an elliptical for five minutes and then repeat this circuit four times: 20 reverse back rows on an inclined bench (Lay on your stomach with dumbbells in each hand. With your arms bent at a 90 degree angle reach your elbows behind you and release.), 20 dumbbell dead lifts (Squat with dumbbells in each hand. Make sure your back is flat and knees don't reach past your toes.), 20 side bends and 100 jump rope skips. After the fourth round of the circuit end with a 15 minute inclined treadmill walk.
EQUIPMENT
Jump Rope, $15, target.com
"I really like a simple jump rope, they are so cheap and easy to travel with," says Pasternak.