Throwing up is just about the worst thing humans have to do sometimes. It hurts, it's tiring, and boy is it gross! But, vomit is a very important way the body deal with illness. In this book, approachable text explains what vomit is made of as well as why and how the human body has to expel it. Written with newly independent readers in mind, this volume explores an essential--but nasty--part of life children are always curious about!.