What bodily response might indicate dehydration during intense exercise?

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During intense exercise, an increased heart rate can often indicate dehydration. When the body becomes dehydrated, its ability to maintain blood volume is compromised. To compensate for this loss, the heart must pump faster to ensure that adequate blood flow and oxygen are delivered to the muscles and organs. This physiological response is critical because it helps the body manage its resource allocation during periods of stress, such as strenuous activity.

Additionally, other factors like decreased perspiration levels can also result from dehydration, as the body attempts to conserve fluids to prevent further fluid loss. However, the increase in heart rate is a key indicator that the body is under stress and struggling to maintain homeostasis due to decreased fluid levels. Frequent urination typically reflects adequate hydration rather than dehydration, while a cool body temperature is not commonly associated with dehydration.

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