I recall working on a south slope once, maybe twice, in a clear-cut, about high noon, during the heat of summer, without a breeze to cool my face or back, the chaps on my legs would become too hot to fast. When it got real bad I would stop and peel the chaps off and hold the saws cooling air intake up against my pants, and then rev the saw up to cool my crotch. It may have looked silly, oh but what a relief! I'm not ashamed to tell it was either that or drop flat from the heat. And plus the fact I'd get a damn good hum job from it to boot.