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Playing football in high temperatures places enormous stress on the body. Experts use the Wet-Bulb Globe Temperature (WBGT) – a measure that combines air temperature, humidity, wind speed, and solar radiation – to determine how dangerous conditions are for athletes. Normally, the human body maintains a core temperature of 36.5°C to 37.5°C through sweating and increased blood flow to the skin. However, during extreme heat, the body diverts blood away from organs such as the kidneys, liver, and digestive system to prioritize cooling.