Early to bed and early to rise makes a man h
,wealthy（富有的） and wise（聪明的）.This is an old English s
.Have you ever heard of it before? It m
that we must go to bed early in the evening and get up early in the morning,and then we shall be healthy. We shall a
be rich and clever.
This is ture.Yhe body must have e
sleep to be healthy.Children at a young age should have ten h
sleep every night.Children who don't have enough sleep cannot do their work very well.They will not be wise and they may not b
The body also needs exercise. Walking,running, jumping,swimming and playing games are all e
. Exercise keeps the body strong.
Exercise also keeps the blood to move around i
the body. This is very important. Our blood takes food to all p
of our body. The head also needs blood. Exercise helps us to think better!