The study, published in the American Journal of Physiology, indicates that, among people 40 years and older, the ability to bend over in a sitting position and touch your toes might be correlated with the risk for heart attack or stroke. Study Reveals the Link Between Flexibility and Arterial Stiffness But here’s a new twist (pun intended) on what stretching does for your body: Research indicates that flexibility in the body may be related to flexibility of the arteries, and thereby to cardio-vascular health. Many people come to yoga for help with back pain, blood pressure, and stress, or simply to try out a new form of fitness.