In this fascinating introduction to the human body, large, colourful diagrams are brought to life by tiny people running around performing the actions that are explained in the text. The 80- page extent allows for an in-depth look at many of the body's processes, and the double gatefolds give a large space in which to show the full body systems such as the circulatory, nerve, skeletal and immune systems. A follow-up to the successful book, Stuff You Should Know.