Heat + Humidity = Efficiency

Man, it's hot. It's been 101 and humid - now we're having daily storms so it's 99 and humid. I figure I can work in the a.m. until about 9:30 or 10:00, and after about 8:00 p.m. I am learning to be SOOO efficient! Lots of out-of-studio planning - what steps are necessary, what is the best way to maximize firing time. The time-and-motion folks haven't gotten to me yet, though; I'm sure I still move 3x as much as is truly necessary. I just pretend it's exercise...