Strong emotions, whether hostility or intense joy, trigger the dispersion of adrenalin and other hormones throughout the human body. Medical experts from the American Heart Association have suggested surges of these hormones may damage the heart through constant exposure or release of fat in the bloodstream, possibly resulting in cardiac arrest.
A 1990 medical study indicates individuals with strong emotional reactions are 3 times more likely to die of cardiac arrest.
Excessive control of emotions increases the risk of cardiac arrest and other physical ailments, as evidenced by individuals of the "type A" personality. Emotionalism is a healthy release of psychological and physiological tension.