T’ai Chi and qigong are popular because of their great reputations as exercises with numerous health-related benefits. Can these benefits simply be results of placebo effects? Chapters in this e-book not only provide an interesting historical backdrop in which taiji and qigong developed, but also provide scientific support for the efficacy and effects of both modalities.           Breslow’s chapter focuses on Daoist practices associated with their quest for immortality and longevity. Rhoads, Crider, and Hayduk looks at taiji and qigong with the tools of modern science. DeMarco compares Yang-style taiji practice of with guidelines provided by the National Institue of Health. Kachur, Carleton, and Asmundson provide an excellent chapter that gives insight into aspects of taiji practice that improve balance. The final chapter by Kenneth Cohen offers a history of the taiji ruler as a tool conducive to vitalizing the qi. Included are aspects of design, lineage, and some illustrated exercises, plus details on qi circulation.           For anyone who questions the validity of taiji and qigong as exercise modalities, the collected writings in this book will provide information not available elsewhere. In addition to finding the historical and scientific foundation of these practices, the contents in this book will help improve taiji and qigong practice, bringing the many benefits as claimed for these gems of Chinese culture.