Heart Rate
During aerobic exercise, peripheral veins, particularly those within muscle, dilate to accommodate the increased blood flow through exercising muscle. The skeletal-muscle pump assists in returning blood to the heart and maintaining cardiac output. A sudden cessation of strenuous exercise may cause blood to pool in peripheral dilated veins and the heart must beat faster and harder to adequately oxygenate the body and maintain blood pressure. A cool-down period allows a more gradual return to venous tone, and allows a gradual decline in heart rate that reduces stress on the organ.
Read more about this topic: Cooling Down
Famous quotes containing the words heart and/or rate:
“And finally I twist my heart round again, so that the bad is on the outside and the good is on the inside, and keep on trying to find a way of becoming what I would so like to be, and could be, if ... there weren’t any other people living in the world.”
—Anne Frank (1929–1945)
“If I die prematurely at any rate I shall be saved from being bored to death at my own success.”
—Samuel Butler (1835–1902)