I did this in the middle of winter one time... except it was at a girls house with a hot tub and a pool. Bad idea.
I usually do CT's 30 seconds hot, 20 seconds cold, repeat method. Except only after doing any PC work. I let it hit at about the bottom of my shoulder blades and it drips down my back to my legs. Great for recovery, especially adter deads.
I dont do it on the front though, I'm too much of a wuss.