Lie flat on your back, hands down at your sides and feed on the floor. Continue to keep your belly button in towards your pin and tilt your pelvis towards your ribcage. Next, lift one leg off the floor, knee directly above your hip and bent at a 90 degree angle. Bring your foot back to the floor and do the same motion with with your other leg. Repeat 20 times, as many times as you can throughout the day.