You are offered a complete picture of the energy of the muscles involved in performing each exercise. This excellent manual contains colorful and detailed anatomical diagrams of each exercise, focusing on each major muscle group separately, along with a full description of how to perform it. These images graphically describe both the muscles and the bones, along with variations in the execution of the exercises, to isolate specific muscles. It's like taking an "X-ray" of each exercise. (. . .) [Excerpt from the text on the back cover of the edition]