2. For junior bodybuilders, if they want to know more about fitness theory, the first step is to know all aspects of knowledge. It is recommended that this book is a reference book for the national fitness coach post examination. Its advantage is that the content is very comprehensive, involving all aspects of knowledge, including energy supply system, nutrition, physical fitness, resistance training, sports planning, sports injuries and so on. Words read smoothly. Suitable as an introductory book. The second step is to learn the elementary exercise plan, which is recommended by high technology. Atlas of sports planning is more suitable as a reference book, and you can look it up when you need it, but the disadvantage is that there are too few words and it is not easy to learn systematically. I recommend: The advantages of this book are illustrated, rich in details and not obscure. The third step is to learn posture evaluation. Most people have some posture problems to some extent. Suggestion: This book uses easy-to-understand language, detailed pictures and simple and feasible methods to tell you what a problematic posture is, and how to judge posture problems, including posture problems from head to toe.