OK I've read many opinions on this...this year for the first time really I have a truck with air that can also pull a trailer at highway speed. So I'm crankin' the air. Now some guys feel that it's "bad" or somehow you "unclimatize" yourself by cooling off. Seems that when your body is overheated sitting in the AC is the smart thing to do. Personally I feel a lot better and able to tackle each job after a brief trip in the AC. Opinions?