Heat-related illness occurs when the body is unable to transfer enough heat through the skin to keep the body's core temperature from rising to a dangerous level. During hot weather, especially with high humidity, the normal regulation of body temperature through sweating and evaporation may not be enough. Overexertion under such conditions can place exercising athletes at risk for heat illness. Older adults, young children, and those who are sick or overweight are most at risk. Drinking fluids, replenishing salt and minerals, ...

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