Contributor(s): Author: National Geographic Kids Get ready to have your mind blown with some hair-raising, eye-popping factsThis latest addition to the crazy popular Weird but True series is all about YOUIt's an exciting internal journey through your own wacky, weird, sometimes gross, but always fascinating human body. Did you know that your stomach is shaped like the letter J? Or that if you lined up all your blood vessels they'd circle the Earth twice? Or that your body gives off a light you can't see? From your head to your toes, you'll be surprised and amazed by what you discover. From the Trade Paperback edition.