Heart attack in E We usually think we get heart attack when we feel chest We don't recognize what organs in your chest or what reasons make our pain- Actually， the most opportunities of pain-feelings from chest probably origin from lung or intercostal The characteristics of pain-feelings are such as frequency of pain， relations to breath， that's whether it disappears along with activities of breath， and so The strength of pain is also a foremost recognition to Heart A If you feel you will die for your chest pain， there is more probabilities in Heart If you feel you can keep alive， then you will be
