Out of print. This is one of five small books on ki and coordination of mind and body, which were written by Koichi Tohei in the early 1970s. It covers all of author's Ki Breathing Exercises (Ki no Kokyu Ho), in greater detail than any of his other books. Detailed instruction into the esoteric form of Kiai taught by the writer is included, along with instruction for Ki Breathing while sitting, walking, lying down, sitting in a chair, and in a group. It was never sold in stores, being only available to members of the author's association. It's one of the earliest examples of his group's teachings in English, and it is uniquely different from his later books like Ki in Daily Life. This book is extremely rare and collectible.