How Does Temperature Affect Heart Rate?

Answer

Temperature affects heart rate when it rises or falls. Warmer temperatures cause the heart rate to increase as the heart beats faster. This can place strain on the body as the body maintains blood flow to muscles moves more blood to the skin to cool it when it is hot. This causes the heart to beat faster. This is a reason you have a faster heart rate when exercising. Colder temperatures can lower the heart rate. When the temperature drops too far the heart rate will increase as it works to keep your core temperature at 98.6 degrees.
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How Does Temperature Affect Heart Rate?
The human body's cardiovascular system keeps itself functioning at peak efficiency by maintaining homeostasis through proper blood pressure. Depending on the temperature relative to the body, blood vessels will either dilate or contract. If blood vessels... More »
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Source: www.ehow.com
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