Lie flat on your back, hands down at your sides and feet on the floor. Once again, breath in and bring your belly button in towards your spine as you exhale, keeping it there the entire time (with your lower back flat on the floor). Roll your right knee down towards your right side, keeping your foot on the floor, then gently bring it back up to the original position. Alternate legs and do 20 repetitions, as many times as you can throughout the day.