A There is an old saying: Early to bed, early to rise, makes a man healthy,wealthy and wise
It means that we should go to bed early and get up early the next morning
By doing this, you will be in good health
And we'll also be rich and clever
It's true that our bodies need to have enough sleep to be healthy
Children should have a ten-hour sleep every night
Those who do not have enough sleep can't do their work very well
They will not be clever and they may not get wealthy in the future
The body needs exercise as well
Walking, running, jumping, riding bikes and playing games are all exercises
Exercise helps to keep the body strong and fit
It also helps the blood(血液) to move around inside the body
The head needs blood too
So exercise helps people think better