Why is it important to chew your food? Can you guess how long it takes for food to travel through your body? Could you possibly have twenty feet of small intestines? Where does that bad-smelling gas come from? Your digestive system is out of sight and out of mind -- until things don't go right. Then you may wonder how these important organs work! You'll find the answers in Seymour Simon's smooth, well-organized, and fascinating introduction to the digestive system. He explains how it works twenty-four hours a day, turning pizza, sandwiches, milk, and other food into energy and nutrients and waste. Striking photographs on every spread show how major organs including the stomach and intestines move food through your body, and how, eventually, waste is eliminated. Guts takes the mystery out of something that happens to everyone, every day, while at the same time sharing a sense of wonder about the human body.