If you’re really tired, upset, frustrated and you suddenly start experiencing severe pain in the chest that drags out into your arm and up into your jaw.
Since many people are alone when they suffer a heart attack without help, the person whose heart is beating improperly and who begins to feel faint, has only about 10 seconds left before losing consciousness.
However, these victims can help themselves by:
Coughing repeatedly and very vigorously.
Deep breath should be taken before each cough
The cough must be deep and prolonged (when trying to produce sputum from deep inside the chest).
Continue the breathe deep and hard cough repeatedly about every two seconds without letting-up until help arrives, or until the heart is felt to be beating normally again.
Deep breaths get oxygen into the lungs, while coughing. Movements squeeze the heart and keep the blood circulating.
The squeezing pressure on the heart also helps it regain normal rhythm. In this way, heart attack victims can get to a hospital.