“Early to bed, early to rise, makes a man healthy, wealthy(财富) and wise (智慧).”

    This is an old English saying (谚语)．Did you hear of it? It means that we must go to bed early and up early in the morning．Then we will keep ．We'll also be rich and clever.

    This is true．The body must have sleep to be healthy．Children of young age should have ten sleep every day．Children who don't have enough sleep can't do their work very well．They won't be clever and they may not become rich!

    The body also needs ．Walking, running, jumping, swimming and playing games are all exercise．Exercise the body strong(强壮).

    Exercise also helps the blood(血) to around inside the body．This is very important．Our blood food to all parts(部分) of our body．The head also needs blood． Exercise helps us to think.