The thing I’ve figured out that really helps me in hot dry environments I adapted from the book Dune; in the book, the desert people wear a water recycler that hooks to their nose, and they only breathe through their nose so it can capture the humidity from their breath. My adaptation is; only exert yourself (walk, climb, hike, run) to the level you are able to sustain *while only breathing through your nose* Absolutely *never* breathe through your mouth. If you get winded, slow down. Breathing through your mouth exposes all your mucus membranes to hot dry air, and makes you thirsty faster. Doing this helps conserve water, slow dehydration, and conserves energy. It is not exactly heat management, but I think it is a good addition to your advice here.
Interesting. That gets REALLY hard with the exertion of backpacking in steep mountains with a schedule to keep and at 8-12k feet altitude. But it sounds like a logical theory.
As a Texan, I manage my heat by swallowing ice cubes. Lol. Its a nice 100 degrees fehrenheit this time of year for me, and on the coast so a steady 90 percent humidity.