Good habits can help us to keep healthy and bad ones can cause diseases. There is a serious disease called H1N1 flu these days. It spreads easily among people in spring and autumn. The flu is a serious disease, but we don’t have to be afraid of it. We can do something to prevent it. But how?

We ought to keep the air fresh all the time. We ought to keep away from crowded places. We’d better drink more water every day.