Weird! I happened to record something on FSN where they do sports experiments last night, and watched it today. There is a clothing line called "X-Bionic" that claims their clothing turns sweat into energy. It's pretty crazy. The host ran on the treadmill without, then with the X-Bionic shirt on. During the first run he bonked, and on the second he was fine. There were heat lamps on during the test, making the ambient temp 125 degress!
The way the clothing works is difficult to explain, but basically instead of wicking sweat away, it uses it to fill its internal plumbing, kinda like a radiator. It also keeps you warm when the temp drops and you are cooling off. So that way your body can use its energy to power muscles instead of trying to regulate your core temperature. I think my "pouring water on my quads" idea might have been a simplistic execution of their complex idea, that I just happened to stumble upon. Or maybe it was all in my head.
Here is their website:
http://www.x-bionic.com/