Doctor , what is the best way to stay healthy ?   Having a good diet is probably the most important thing .   It is very confusing to know what to eat .   You need plenty of fruits and vegetables , small amounts of protein , and whole grains .   Are there certain things that I should avoid ?   You shouldn ’ t consume too much sugar or caffeine . Also , watch your intake of fatty food .   After watching my diet , what else should I do ?   You need to stop smoking , and make sure that you get 30 minutes of exercise every day .   Can I have a glass of wine now and then ?   As long as you don ’ t overdo it , a glass of wine a day should be OK . 