The powerhouse for pain-free exercises. One in four people suffers from knee pain. Pain specialist Roland Liebscher-Bracht, together with his wife, physician Dr. Petra Bracht, has developed a uniquely effective method to combat such pain. The bestselling book is now available together with a practical exercise loop in a unique set: - facilitates the assumption of stretching positions - increases the effectiveness and intensity of exercise sessions - provides active and passive strengthening impulses.