Start in an athletic stance, feet shoulder-width apart, knees slightly bent, hands in front of chest. Shuffle quickly to the right fours steps, and end lunging your right leg to the side, sinking down into a deep lateral lunge, so your right thigh is parallel to floor, left leg straight. Push out of the lunge with your right heel, keeping the left leg straight. Repeat to the other side: Shuffle to the left four steps into a lateral lunge on left side. Continue for 1 minute.