Heat bursts are rare but I think they warrant being aware of. I’ll link a video below of what people did to survive the ones they experienced.
Non youtube link(attempt):
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Click https://duckduckgo.com/?q=youtube+satan's+storm+texas+swegle+studios&ia=web
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Click video tab at top, then the thumbnail with Yellow text. This should give you the watch here option
Youtube link:


A) Drinking water is external cooling, just inefficient.
B) No, your anecdote doesn’t change reality. though the 35c is a good reference point humidity does matter. If you cannot sweat you cannot cool down. Period. End of story.
At 35c you MUST be able to sweat or cool down in some other way, or you will die. just the close you are to 100% relative humidity at that temp, the less you will be able to sweat. So you will have one less method of cooling down.
Many people have no problem living in 35-40c temps with low humidity. Maybe up to 45c with 0% relative humidity.
There are not humans that have survived 35c at 100% humidity for more than 2 hours. They don’t exist on this planet. They physically can’t.