Dumbbells kick up the calorie burn of this 15-minute flab-fighting cardio routine.
What you'll need: a pair of 3- to 5-pound dumbbells
Targets: Back, biceps, triceps, and quads
- Holding a dumbbell in right hand, stand with feet hip-width apart. Bend right elbow behind you to bring dumbbell by ribs, and extend left arm forward, palms facing in.
- Hinge forward from waist, bringing bent right knee toward chest to get into tuck position.
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