From chunky bits to stinky pits, gooey eyes to drooly nights: bodies are amazing--and disgusting! Have you ever wondered how water becomes pee? Or why you snore? Or what makes your sweat smell? Find out about tears, fears, and contaminated smears in this weird and wonderful look at the body's super systems. Includes This Is Why You Barf, This Is Why You Cry, This Is Why You Sleep, This Is Why You Sweat, and This Is Why You Pee.