Has anyone else experienced a marked decrease in the ability to tolerate heat for long periods after a certain age?
Over the weekend, I attended an all day event in ~90-95 F heat, and, around mid afternoon, I began feeling extremely sluggish despite drinking lots of water and powerade. Eating and resting helped a bit, but not a ton.
A couple years ago, I was training for a long bike ride (I think that day's ride was 65 or 70 miles), and I had to have a nurse friend pick me up and start an IV on me, despite drinking tons of gatorade and snacking. I felt nauseated for a couple hours after being picked up as well.
Prior to my 30s, I don't remember ever having any issues with heat as long as I kept drinking fluids.