i dunno what it is. but lately i've been hearing soo much bragging from people (especially pre-meds!!!) who say they only slept 1-2 a night while studying. these same people who pull all nighters now in dental school are probably teh same ones who pulled all nighters during under-grad for organic, biochem or anyone of those other classes. i personally find it much more important to get a good nights rest and be awake during the test. i've never pulled an all nighter, always slept at least 5 hrs before tests and never got below a B in any of my classes (with one small exception) sleeping 7-8 hrs a night is optimal. read the time magazine (came out sometime last month) about sleep (cover story). VERY interesting.. moral of the post: not sleeping is not cool
hahah
omar