1) Lie face down on flexaball with knees and feet on floor.
2) Flexaball placement should be at abdominal to lower chest region.
3) With hands on chest, raise trunk 4-8 inches.
4) Lower to start position.
5) To increase intensity, position ball down towards hips, feet wide with knees off floor. Hands may be placed behind head and overhead to further increase resistance. To increase stability, place feet against wall or stationary object.
