I spent all of Saturday at a metal show in Tampa. Lots of bands: Machine Head, Kingdom of Sorrow, The Athiarchists, and finishing up with Megadeth, Godsmack & Disturbed. Other bands there I wasn't interested in, but there were two outdoor stages and a main stage. Needless to say it was hot & humid as hell. I came prepared, however, with a large bag of jerky, trail mix, baked veg chips, dark chocolate, dried apples and water. I also discovered that sharing beef jerky is a great way to make new friends, especially with the security guards, lol.
I have never sweated so much in my life. Being surrounded by huge sweaty guys, no breeze and being next to the pit, the sweat was just dripping down my arms and stomach. Yet despite all of the water I drank that day (probably a gallon's worth--16oz bottle on the way there, 1.5L bottle, 2-20oz. bottles after I finished the 1.5L, and another 16oz when I got home), I only had to pee twice, and even then it wasn't so much of an urge as it was "better to go in between bands so I don't miss anything". And when I did go pee, the urine wasn't dark at all (which I know would indicate dehydration). I could probably have gone all day without going pee.
Has anyone ever experienced this? I would think I must have been doing something right by eating salty foods, and drinking lots of water to keep my electrolytes in balance. I didn't get any headaches or cramping, aside from wearing my heavy tactical boots in place of my usual Vibrams (never doing that again! god my feet were killing me!).