Joy and Mike are talking about how to keep fit.
Mike: Joy, look at there pictures. They tell us how to keep fit.
Joy: Yes. Having a good habit is very important to keep fit.
Mike: You are right. So we'd better go to bed early.
Joy: I agree. Early to bed and early to rise makes a man healthy, wealthy and wise. .
Mike: Doing some exercise is also very necessary.
Joy: Running, swimming, playing basketball and so on are all healthy sports.
Mike: Yes. And I really love running.
Joy: Me too. When I do sports I feel very happy.
Mike: Yes, it can help you feel relaxed.
Joy: Besides, I think we should pay more attention to our environment.
Mike: Eh…we should usually clean our room.
Joy: And our classroom. We should usually clean our desk.
Mike: We shouldn't leave garbage everywhere. Additionally, we should wash hands before eating.
Joy: Yes. Washing hands is really important. It can keep us away from germ ( 细菌 ) .
Mike: Beside this, having a healthy diet is also very important.
Joy: That's right. We should drink milk every day. It will make us stronger.
Mike: We shouldn't eat too much chocolate and drink too much pop.
Joy: Yes. They are junk food. They are bad for our health.
Mike: But I like eat meat.
Joy: Not too much. Too much meat is also unhealthy. You should eat a plenty of vegetables, especially green vegetables rich in cellulose( 纤维素 ).
Mike: Maybe you are right. I will have a try.