Free Your Back!: Ease Pain & Regain Natural Poise with Gentle Exercise Based on the Alexander Technique. Free Your Back will change the way you st&, walk & sit. The advice will help you to ease those painful stiff necks & backaches & allow you freer movement & better balance throughout your body, for a healthier life free of back pain. In this practical, easy-to-follow guide Penny shows you how to retrain your body to move, sit & work more easily. The exercises are clearly illustrated by professional cartoonist Colin Shelbourn, one of Pennys pupils, to help you incorporate them into your everyday life, learning new ways to let your body function without stress.