Unveil the impressive mysteries of your own body with this interactive trivia book from Jeopardy! champ and New York Times bestselling author Ken Jennings. With this book about the amazing human body, you'll become an expert and wow your friends and teachers with awesome anatomical facts: Did you know that your hair is as strong as copper wire? Or that if you could spread them out, your lungs would have the surface area of a tennis court? With cool trivia, and fun quizzes to test your knowledge, this guide will have you on your way to whiz-kid status in no time!