Blood from the heart flows in blood vessels, and the liquid flowing in the pipeline always exerts certain pressure on the wall of the tube, and blood is no exception, thus forming blood pressure. The level of blood pressure is related to the ejection pressure and the elasticity of blood vessel wall. Atherosclerosis patients with poor elasticity of blood vessel wall have high blood pressure, and exercise can enhance the elasticity of blood vessel wall, thus helping to lower blood pressure. Because people who exercise regularly have strong myocardial contractility and large ejection volume, the decrease of blood pressure is mainly a sign that their blood vessel walls are elastic, the peripheral resistance of blood flow is reduced, and the adjustment ability of the nervous system is improved, so it is also a sign that the cardiovascular system and the nervous system are functioning well.
It can be seen that exercise can increase the volume, weight, contractility, ejection volume and elasticity of the heart vascular wall, and make this "motor" in the body more lasting. No wonder people call running and other sports "the road to heart health".