>>But in their new study, the researchers found that the actual maximum wet-bulb temperature is lower — about 31°C wet-bulb or 87°F at 100% humidity — even for

>>But in their new study, the researchers found that the actual maximum wet-bulb temperature is lower — about 31°C wet-bulb or 87°F at 100% humidity — even for young, healthy subjects This is exactly what I had figured from first principles. Our skin temp is about 86°F (an interesting corrolary to this is that it is the temperature that we set a waterbed thermostat, and +/- tenths of a degree make a huge difference in comfort regardless of blankets). By sweating we can use evaporation to cool. However, that cooling effect is eliminated in 100% humidity, when evaporation will not happen (or is equaled by condensation). It just seems obvious that when one cannot cool, and the surrounding temp is higher than the body's external temp, the body will inevitably gain heat. With no relief, there is no other consequence than overheating. Am I missing something here?