The Ab Revolution Author:Jolie Bookspan - Forget machines and crunches?they promote poor posture and don't teach you to use your abs the way you need for real life - Learn how to use your abs for everything you do - Fix your own back pain - Burn more calories and get incredible abs - Revolutionary exercises that blow away anything you're doing now - 96 jam-packed pages ... more » - Step by step instructions - By former military scientist, national class athlete, award winning educator, and sports medicine specialist Dr. Jolie Bookspan« less