It's very important for us to keep healthy.We have many good ways to keep fit.For example,we 'd better eat more fresh fruits and vegetables.Don't eat too much meat etc.Running or doing morning exercises are also good for our health.If you do like this.you can breathe more clean air. Pay attention to have enough sleep ,It's better to sleep at least 8 hours a night.Don't watch TV or play games for too long time.In a word ,We need healthy body ,Only in this way .Can we study well or work well.