Yeah. I had bad insomnia problems in college. You hit a sweet spot around 40 hours that makes you feel giddy and full of energy, but by around hour 55 you realize that whatever chemicals were keeping you going are gone, then you start to crash, but for some reason you're mind is too active to let you rest, almost like your mind has forgotten how to turn off, so you spend a lot of time twitching, tossing, and turning, going "help me! Help meeee!" like Brindlefly. And when you do fall asleep, waking up is very much like a hangover. I wouldn't recommend sleep deprivation for anything but hallucinations and mood swings.