A simple explanation of how the human body works, discussing the five senses, muscles, bones, digestion, the heart, and the brain.

Presents simple experiments answering such questions about the human body as "Why does my skin pucker up when I take a long bath?" "Why are my bones hard?" and "How much breath do I have?"

Explains the various systems of the body with the help of imaginary characters known as the Brainwaves, with separate sections and gatefolds covering the muscular, digestive, and respiratory systems, and explanations on how the body fights disease.

Provides a multidimensional view of the human body: inside blood cells; systems from the inside out; and cross sections of the brain, muscles, and bones.