Ah I see.... 
On my part, I believe that if you have to do a lot of mugging the
night before an exam, then I say that your preparation stinks, you
left things to the very last minute, and you should be prepared to
be screwed.
The night before any examination, I just flip through my notes to
get 'in the mood' for the next day's paper.... and I sleep
at least eight hours to
make sure I'm fresh by the time I turn up at the exam hall.
I've had people mocking me for starting my preparations early....
but hey, at least I don't turn into a kan cheong spider the night
before the exam.
