Last month I had a health problem and had to see a doctor. After examining  me, The doctor said to me, "The result isn't too bad ." But you must excise often and have healthy food every day.  In fact, I'm a lazy person. I never get up early to exercise. And I often have junk food because I like it. In order to be healthy, I decided to change my lifestyle.    Now I get up at 6:00 am every day. Then I go out to run for about an hour. I go to a gym on Wednesday and Saturday afternoon. And I hardly have junk food. I have healthy food, like milk and fish. I often eat vegetables and I have an apple every day. You know, " An apple a day keeps the doctor away " I also have about eight glasses of water. And I usually go to bed by ten.  All these things make me healthy. What does "An apple a day keeps the doctor away" mean ?
The doctor goes away when he sees an apple. The doctor runs away when you give him an apple. If you eat an apple every day, you'll be healthy. The doctor gives you an apple every day and then you don't need to see him.