Back before 2009 it was GUY-WWR-WDG-TUL-DFW-4 hour sit/nap in the truck-OKC-2 hour nap in the plane-WWR-GUY. By the time Friday rolled around I was a zombie.
"I know a guy who" ducked under MDA at GUY just because he was so exhausted he didn't think he could make it to his alternate at Liberal. That was really stupid, and it was the only time he ever did that before or since.