Ok, so I feel really bummed out even having to ask this question, but in all seriousness: I have a classical mechanics final in 11 hours. It's upper division CM not like first year stuff. Anyway, I'm decently prepared. I mean, if I take it now I will certainly pass. But I want the best possible grade I can get. I feel like there are a couple areas that I definitely need more practice with. I'm pretty confident in working with the Lagrangian and doing simple oscillation problems, but I definitely need some work on rotational kinetics where the direction of the angular momentum vector is changing, and also more work with wave problems... Anyway, I've spent all day working on my final exam for a different class (English course online, been writing essays all day). I hoped it would only take a couple hours but it took all day. So I'm presented with a few options: 1) prepare a couple hours more, sleep, do as best as i can 2) spend the night practicing problems and get super prepared, deal with lack of sleep during test 3)sleep, wake up early and practice If you were in my situation, which route would you take? I know that (1) clearly looks the best, but I am not good at waking up, nor am I good at performing on tests immediately after waking up. I'm the type of person who does best when I've been awake for awhile. Furthermore, I'm also the type of person who is used to staying awake for 24 hours. So with those considerations, is staying up all night really as bad as people say it is? And please don't chide me with "you should've prepared last week", it's been a seriously difficult semester and I was busy preparing for other incredibly difficult classes, e.g. complex analysis and nonlinear dynamics, that I happen to care just a little bit more about.