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 provide a generous area in which to show the full body systems such as the circulatory, nerve, skeletal and immune systems. This is a key follow-up to the successful book, Stuff You Should Know.