A study of nearly 700 individuals with coronary artery disease has revealed that hearts in men and women react differently to a temporary reduction in blood flow to heart muscles, a common symptom caused by stress. While some men may experience an increase in blood pressure and heart rate, making their heart work harder, about 1 in 5 women experienced constriction in their smaller blood vessels, which can cause more serious heart complications. American Heart Association representatives recommend physical exercise as a way to manage mental stress. Exercise will make blood vessels dilate, counteracting the constriction seen by some of the women who participated in the study. Regular exercise, like a daily walk or run, can go a long way in helping us cope with mental stress.