Ingredients: 35°C ambient temperature. 100% relative humidity. One human body, core temperature 37°C. Shade. Drinking water, unlimited. Six hours.
Combine temperature and humidity until the wet-bulb reading reaches 35°C. A 46°C day at 50% humidity will substitute. Place body in shade with water available. Allow to rest.
At saturation, sweat will not evaporate. Metabolic heat has nowhere to go. Core temperature climbs past 40°C. Organs fail in sequence. The shade and water are still there.
Serves one.