Start on all fours, palms flat placed under your shoulders, knees in line with your hips and feet "laces down". While keeping your belly button tight to your spine, take a deep breath. While exhaling, slowly arch your back and raise your chin to the ceiling, hold for a 3 count. Take a deep breath and slowly round your back, and tilt chin to chest, hold for a 3 count. Continue "cat-cowing".