Sit on a folded towelon floor with shoulder blades against a wall and knees bent, feet flat; make sure back is rounded. Place hands on floor near hips, fingertips pressed into floor.
Squeeze abs and lift feet off floor, bring knees toward chest, then straighten legs so toes point toward ceiling. Do 10 pulses: Bring legs 1 inch closer to wall, then move them back 1 inch. Make it easier: Keep left foot on floor and bring extended right leg toward you by grasping right calf with both hands. Hold for 30 seconds; switch legs and repeat.
