I think that's our problem today in this country people are soft and like staying up for 3 days with no sleep is a good training not that the drill Sargent is trying to break you but teach you how to stay alive in combat.
I remember staying awake for 3 days in a row and I'm still alive with no side affects from it.
Canned chili has more side affects for 3 days and ya know I can prove that. LOL