Well, sheesh, don't all these heat exhaustion deaths make the national news at times? I really do wonder what the ranger told them on the phone.
Speaking of hiking in extreme heat, there are folks (mostly Phoenicians, I believe ;) ) who can tolerate it fairly well. I will be the first to say that I really admire that capability. It certainly would stretch the desert and Canyon hiking year quite a bit. I do realize that part of this capability is due to training for it. But there is also some genetic thing at work there as well, I believe. Some people just have a higher tolerance for heat. I used to hike to Hutch's Pool, Romero Pools, Sabino and Seven Falls in summer with my kids. We would hit the trail by 5 or 6 a.m. so hiking in to the swimming hole was ok. Then swimming all day. But the hike out was brutal for me, even though I spent a lot of time outdoors during summers in Tucson. I would bring extra water bottles and wear cotton. I would fill the water bottles with the creek water and dump them on myself periodically during the hike out in the afternoon. But later on that night I would always come down with a horrific debilitating nauseating killer migraine. (This was before Imitrex was invented.) Ugh. My husband finally asked me why I was doing that to myself! (The first part of it was so much FUN, though!)
Later on we discovered there was a pretty good pool not very far at all up Sabino. Deep enough to jump off a rock. This solved some of the problem since then the hike back out was only a couple of miles. (No, I didn't ride the dang tram, are you kidding? Too expensive with my kids plus their friends.)
There is a point of no return unremarked at the time in most lives. Graham Greene The Comedians
A clean house is a sign of a misspent life.