it's important for us to be healthy all our life. we can't study or work well without healthy body.

　　there're many ways to keep healthy. first of all, we should keep taking exercises every day. we can walk to school instead of taking a bus. after school, we can spend an hour playing ball games. if we live in a high-rise, we can walk upstairs or downstairs. second, we should have a balanced diet. finally, we must remember: "early to bed, early to rise is the way to keep healthy, wealthy and wise."