In China, there is an old saying, "Good heath can bring wisdom and treasure." From that we can learn how important to be healthy. And at present, since education is a life long process, it's necessary for us college students to know more about health so that we can have a good health. How can we do that? Of coure, a health class is the best choice.
Now, there are many health issures existing among the college students, like overweighth and smoking. I once have an experience about the overweight problem. That happened on my domitry. The two girls who are my roomates think that they are too fat. In fact, I don't think so. In order to become slim and beautiful, they decided to be on diet. Every morning, they don't have breakfast. At lunch, they often only eat a little rice and some vegetables. In evenings, they even don't have supper or only eat an apple. Some days later, they seemed becoming a little thinner. But unfortunately, they were tire of eating. Even there are much delicious food in front of them, they didn't want to eat. Later, they went to hospital, and were given advice by the doctor. From that, they learned unfit on diet is wrong and bad for their health. But if they know this at first, they would never do that.
In the other hand, the youth must have a physical and mental health. If a person is clever but doesn't have a good health, how does he get along with his study? A health class is necessary. 
Education is a lifelong process. A health class is essential.
