Arieh Breslow & C.J. Rhoads 
T’ai Chi and Qigong for Your Health [EPUB ebook] 
Historical and Scientific Foundations

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.