I know out in Vegas about 115 F here, and in the shade I can sometimes work w/o sweating. For example workin in the Garage on a car. As long as they are drinking plenty of water they’ll be fine.
But if they start to become pale, or feel sick, dehydration sets on fast so, they’ll know if something is wrong.
I am not talking to him in person. As far as I know, he has been drinking water. I do not know what kind of work he is doing. He has not been out of the heat in hours and says there is nowhere to get out of the heat. He is an adult.
@wgallios You probably are sweating, it is just evaporating before you notice.
@gememers If he is drinking plenty of water, and 1 liter of gatorade a day he should be Ok. The gatorade will replace the electrolytes he is losing. But it should not be the only thing he is drinking.