Get slimmer and stronger with these easy-to-do power moves.
4. POWER MOVE: Hamstring curl
Stand in front of the stairs with your left hand on a railing for balance. Extend your right leg behind you, toes a few inches off the ground. Bend your right knee slowly, bringing the heel toward your rear, keeping your hips level. Return to the starting position. Do 10 repetitions on each leg, repeating the sequence for 1 minute.