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 vegetable, especially green vegetables rich in cellulose( 纤维素 ).

Mike: Maybe you are right. I will have a try.