OK, I tried the gatoraide suggestion today when working on my boat.
Drinking the stuff did seem to help although it isnt really clear. It
was only about 85 degrees compared to 92 last week and I was in the
shade inside the boat by the engine instead of outside in the sun.
However, in both cases there was a breeze outside making it cooler so
maybe it is roughly the same. I drank a lot less gatoraide than I did
water last week and felt better. The stuff isnt too bad although a
half gallon in 48 hours may be a little extreme.