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Lie on your back, knees bent, feet flat on the floor and close to buttocks. Inhale and expand your belly, then exhale to bring your transverse to the fifth floor, placing the small of your back on the floor (if you have a diastasis, use a splint; see "How to Check for a Diastasis," main page). Lift your head only, bringing your chin toward your chest (shown). Hold your transverse in as you inhale and bring your head down to the floor and do 10 head lifts. Strengthens abs.