Intended for intermediate level Tai Chi players. The author, a thirty-seven year Tai Chi practitioner with a Ph.D. in experimental physics, applies logic and basic scientific principles to clarify many perplexing concepts in Tai Chi such as force, muscle contraction, breathing, and more. Discusses self-development, Tai Chi massage, how diet effects Tai Chi, the role of a teacher and many more common concerns of intermediate Tai Chi students. Supported with photographs and drawings throughout.