A: Doctor, can you give me some suggestions on how to stay healthy? B: Well, first of all, you need to make sure that you eat the right foods. A: What are the best foods to eat? B: You should emphasize fresh fruits and vegetables, along with whole grains and protein. A: What should I avoid? B: You need to avoid highly fatty and greasy foods. You should also avoid too much sugar and caffeine. A: What else is important to stay healthy? B: You need to get plenty of exercise every day. If you smoke, you need to stop. A: Is it OK to drink alcohol? B: Actually, studies have shown that people who have one-half a glass of alcohol per day do better than those who don't drink.