i think everyone has a limit and there are many contributing factors. my profile picture was taken last year on July 4th it was 95 and we had townhouses on fire. I wasn't affected by the heat, but several guys went down because of temps. Gotta stay hydrated and work to keep you body temp down. Now when you go to rehab, they have misters and give you freeze pops while they monitor your vitals. 30 years ago we drank warm tank water, smoked a cig and went back at it