Today, more doctors than ever are prescribing tai chi for patients recovering from injury, illness, and surgery. This book presents over ten years of research into how and why Tai Chi benefits health from an evidence-based, medical perspective. Dr. Peter Anthony Gryffin demonstrates the link between health and metarobics, his term for slow, meditative exercises that enhance blood oxygen saturation, diffusion, and oxygen-based metabolism. Metarobics - including Tai Chi, qigong, and yoga - focus on relaxation and deep breathing. Dr. Gryffin's research shows that these exercises offer a wide range of benefits for treating chronic disease.