Have you ever heard someone say, 'at least I have my health?' Staying healthy is very important to us. If you've ever had a cold, the chickenpox, or a broken bone, you know that it's hard to be happy when something is wrong with your body. A cold makes you feel lousy, the chickenpox makes you itch, and a broken bone is very painful. The books in this series will help you learn more about the minor health problems we all fact at one time or another. Along the way, you will also learn how all the parts of your body work together to keep you healthy most of the time.