there is an english saying.it says,"early to bed, early to rise, makes a man healthy, wealthy and wise." have you ever heard it before?it means that we should go to bed early and get up early.if we do,we shall be healthy.people must have enough time to sleep.we should sleep for 8 hours every day.so we must do our homework quickly and go to bed before 10 p.m.proverbs can always give us some enlightenment.to know some proverbs is good for us.