Try Houston when it is 95 or 100 degrees and humid, you have to stop work because you can’t sweat, you can still have all the energy and be raring to go but with no heat release you have to force yourself to stop what you are doing, that stopping can be maddening when you are chomping at the bit to finish but if your inside temp has reached the danger zone you just have to force yourself to stop.
A fri3nd went to the oil fields in Texas, and he said people were getting lots of kidney stones apparently from drinking Gatorade all day due to the extreme heat and humidity. I would imagine such conditions must be brutal,on the kidneys if folks are getting dehydrated often without realizing it.