“Early to bed，early to rise”makes a man healthy, wealthy and wise. It's good for the body.
This is an old saying. Have you heard of it before? It means that we must go to bed early at night and get up early in the morning. Then we shall be healthy. We shall also be rich and clever.
That is true. The body must have enough sleep to be healthy. Children of young age should have enough sleep，or they can't do their work very well. They will not be wise and they may not become wealthy!
The body also needs exercise: walking, running, jumping, swimming, playing games and all other exercise. Exercise keeps the body strong. Exercise also helps the blood to move around inside the body. This is very important. Our blood takes food to all parts of our body. The head also needs blood. Exercise helps us to think better.
根据短文内容，回答问题。
What does“early to bed, early to rise”mean?
What must the body have to be healthy?
What will happen to Children of young age who don't have enough sleep?
What keeps the body strong?
What takes food to all parts of our body?