Another move that requires paying special attention to balance and leg placement. Be very careful to not place your bent knee past your toes - This could seriously damage your knee joint! 15 Reps on each leg: "Step forward with your right leg, placing your left heel up on the wall and the ball of the left foot on the floor. Face forward and bend the knees to lunge straight down, then push back up. Don't learn forward. Try to balance your weight evenly between both feet, and keep your toes pointed forward. Exhale as you push back up and inhale as you lower down. Repeat on opposite leg."