Walking Cross-Behind Lunge

START: Stand tall with your feet hip-width apart. Brace your core and pull your shoulders back. Put your hands behind your head in the "prisoner" position—as if you've just been arrested, or clasp them together in front of your chest.

MOVEMENT: Step backward with your left leg and cross it behind your front foot. Lower your body into a lunge. Your rear knee should nearly touch the floor. Keep your torso upright for the entire movement. Pause, then push youself back up to a standing position, stepping through with your left leg (this now beomes your lead leg). Now step backward with your right leg and cross it behind your front foot. Continue to travel forward, alternating your lead leg. Do 8 reps with each leg.