The sympathetic nervous system’s increasing activity causes an increase in the heart rate, cardiac contractility, and stroke volume. With this, there is also an increased delivery of blood to the skeletal muscles that are being contracted, as well as the arterioles in these muscles are being vasoconstricted, meaning the blood vessels are being constricted and causing an increase of the blood pressure. Because there is an increase in vasoconstriction, vasodilation decreases. Because of this, the circulatory system must increase the resistance to push blood through vessels to create flow. With an increase of the blood flow throughout the circulatory system, there is an increased distribution of oxygen to cells as more carbon dioxide is being removed. With all of the other stated physiological changes that dynamic exercise causes, it also causes the skin temperature on the body to change. Core body temperature is controlled by balancing the heat gain with heat loss; the body produces sweat to help control this process. With dynamic exercise, there is a change in the skin temperature on the body. When one increases the rate and intensity of dynamic exercise, the individual produces more heat than at resting position.