Do you sweat in the heat? I love running in the heat...everything gets wet. I find it amazing how cold my wet, bare skin becomes from evaporative cooling as I run.
I attribute my tolerance to heat from using no a/c in the summer: none at home, no car a/c, and I stay away from public places with a/c. A/C can be dangerous;
Legionnaire's Disease, etc you know....
...The Legionella bacteria are found naturally in the environment, usually in water. The bacteria grow best in warm water, like the kind found in...the air-conditioning systems of large buildings...