阅读理解 1． Habit is something we do very often. We do not think when we are doing it. We can have good habits or bad habits. This text gives some advice on how to be healthy. It tells you what to do if you want to be healthy. It also tells you what you must not do.lt talks about good habits and bad habits. 2． Early to bed and early to rise makes a man healthy, wealthy and wise. This is an old English saying. Have you heard of it before? It means that we must go to bed early and get up early in the morning. If we do,  we shall be healthy. We shall also be rich and clever. 3. Is this true? Perhaps it is. The body must have enough sleep. Children of your age need ten hours' sleep every night.lf you do not go to bed early, you can-t have enough sleep. Then you cannot think properly and you cannot do your work properly. You will not be wise and you may not become wealthy. 4． Some people go to bed late at night and get up late in the morning. This is not good for them. We must sleep at night when it is dark. The dark helps us to sleep properly. When the daylight comes, we must get up. This is the time for exercise. Exercise means doing things with the body. Walking, running, jumping, swimming, playing games are all exercises. If the body is not used, it becomes weak. Exercise keeps it strong. 5, Exercise helps the blood to move around inside the body. This is very important. Blood takes food to all parts of our bodies. The brains in our heads also need blood. We think with our brains.lf we keep our bodies healthy and take exercise, we can think well.