Hold a 10-pound dumbbell in your right hand, and stand on top of a 10-pound weight plate, step, or box. Balance on your right foot so that your heel is off the plate, and wrap your left leg behind your right (A). Press into the ball of your right foot until you are on your toes (B). Pause at the top for two seconds, and slowly lower down. That's one rep. Do 15 on each side.
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Holly Perkins is a certified strength and conditioning specialist, founder of Women’s Strength Nation, and author of Lift to Get Lean.