After a 40 hour surgery there's no way I'd take all the time to shower, change clothes, listen to music, and then watch an episode of something... I'd just be like the walking dead. You're so tired at that point you aren't even hungry. Literally I'd just straight up pass out, deal with everything in the morning. Shower, wash my sheets if they stink, eat something.
I don't know how some of those people do it, coming off like a 40 hour shift and getting 3 or 4 hours of sleep then having to go back on call. Money be damned, that kind of life would be hell.
Actually, I don't know. After a certain amount of time everything just kinda goes to static. You feel like you're there but you aren't, like you're awake but nobody's home, you're alive but you're not, you're just there. I think maybe it's some point after staying up for over a day when suddenly something just clicks. You go from being super tired to just nothing. Not tired, no emotions, no feelings at all... just there. Some people start hallucinating after day 3 too.
I had insomnia at one point. I never hallucinated after 3 days though... after the zombie feeling where it was like I was like the living dead at some point it just felt like I was high, in addition to the feeling of stoicism and total disconnect.