AoC,
I didn't read everyone's posts, but I'm sure it's all good advice.
I used to work in oil tanks. Crews would get to the point where they'd get delerious and stop sweating because they were so hot, working inside the tanks (120degF sometimes). We'd step out of the tanks into 100degF and get the chills because of the temperature difference.
Drink lots of water. If you're feeling thirsty, it's already too late, in a sense. Thirst is the body telling you there's a problem. Drinking is preventive maintenance.
Keep water on you. Get an ALICE belt and a canteen from a surplus store and wear it...you'll find it gets light all too soon.
Dehydration and heat are nothing to play around with.
Aqualung
