Answer :

Friedman and his colleagues discovered that relaxation training was the most efficient method for preventing follow-up heart attacks in a trial of type A heart attack survivors.

A myocardial infarction, commonly known as a heart attack, occurs when the blood supply to a portion of the heart muscle is inadequate. The heart muscle suffers more damage the longer it continues without treatment to increase blood flow. Coronary artery disease is the main cause of heart attacks (CAD). A heart attack occurs when an artery that supplies the heart with blood and oxygen becomes blocked. When fatty, cholesterol-containing deposits build up over time in the heart's arteries, plaques are produced. When a plaque ruptures, a blood clot could happen. The clot's capacity to clog arteries may lead to a heart attack.

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