A fact-packed, beautifully illustrated, all-around introduction to the human body and how it works. Engaging, friendly text and clear, simple explanations. Experiments and activities show how to take your own pulse, test your reaction time and fool your brain with optical illusions. Amazing facts and records, including the world's tallest man, the oldest person ever and the longest fingernails on record. Recommended, regularly reviewed websites and downloadable pictures can be accessed via links at www.usborne-quicklinks.com.