You Can't Lick Your Elbow

You Can't Lick Your Elbow is a guide to the weird, clever, and amazing things you can—and sometimes can't—do with the human body. We'll show you how to hack into your own physiology to maximize and alter your body's responses to all kinds of situations. Join host and NFL analyst Tony Gonzalez as he takes you on a tour of the high-tech machine you carry around 24/7. (National Geographic)