Käytetty hyväkuntoinen kirja.

"Unique, safe, practical and immediately effective, Internal Exercises energize the entire body, promote effective functions of the internal organs, dissolve stress and tension, prevent health problems, heal, regenerate, and do much more without strenuous exercises or equipment. Dr. Chang has devoted forty years of intensive research, experience, and meticulous selection to make sure that each technique is: 1) a genuine Taoist teaching 2) rooted in scientific research 3) proven to possess great healing value 4) completely natural 5) absolutely safe (no side-effects) and free from time or space limitations."