Do you know any addiction especially like smoking is very detrimental to having good sleep at nights. Smoking is also proved to have really bad effects on the heart.Problems in breathing which is one of the main characteristics of apnea is also caused by smoking.However,smoking is responsible for both complicating the conditions of apnea and at the same time hampering the smooth workings of the heart.So, try to give up smoking to avoid this kind of health problems.