David is a 15-year-old boy from England, but lives in Shanghai with his parents now. He is healthy now. But in the past he had some bad habits. 他喜欢熬夜并且经常在晚上玩电脑游戏。In the morning, he got up late and didn't eat breakfast. For lunch and dinner, he ate junk food.
He liked eating candies so much that he was a little heavy. And he never exercised. His parents asked him to do sports, but he never listened.
Last year, David often feel tired. His parents were worried about his health, so they took him to the hospital. The doctor told David that he was in bad health. Then David wanted to do something. Now he has many good habits. He always eats healthy food. Also, he goes to bed early and gets up early. Now he enjoys doing sports. 他每天要花一个多小时跑步。He thinks running can make him strong and relaxed. When he is free, he usually helps his parents with housework. He also loves reading in his free time now, so he seldom plays computer games. These good habits help him keep healthy.