Exercise is important for good health, if you didn't know that you are already living a high risk lifestyle. It is true! It means you have been doing all the wrong things all these years and your case must be looked into urgently. Your muscles will become flabby and weak. Your heart and lungs may fail to function properly. What you don't now is that, you can even afford to eat all the wrong foods if your are exercising regularly. That means, lack of exercise may be killing you more than the cigarette you are smoking.