Stability Ball Rollout

The stability ball rollout trains the abdominals in the way they actually work: by resisting extension rather than producing flexion. Kneeling with your forearms or hands on the ball, you roll it forward and the load on your midsection grows with every centimetre, because the further the ball travels the longer the lever between your knees and your shoulders becomes. The abdominals fight to stop the lower back arching, and that is the entire exercise. It is a gentler entry point than an ab wheel, since the ball rolls more slowly and you can stop the movement at any distance. Roll only as far as you can go while keeping the hips from sagging. The moment the lower back arches, the abdominals have handed the job to the spine and the repetition has stopped counting.