<p>In 7.5 hours, I have to be at the test facility. I know nothing about electrochemistry, organic chemistry, kinetics, or oxidation-reduction.</p>
<p>For the last AP of my life, it does sound romantic to go in sleepless. But does sleepless mean mentally listless?</p>
<p>sometimes I pull allnighters and I’m trying hard not to fall asleep in class and I don’t remember anything anybody says to me… but other times when I pull allnighters I’m superhyper and my mind works perfectly, if not even better than normal…</p>
<p>so it really depends I guess</p>
<p>i’d go with multiples of 4, so since u missed the 8 mark…</p>
<p>id’ go with multiples of 3 actually. there’s been studies done and supposedlly your cycle is in 3 hour periods.</p>
<p>I think it’s multiples of 1.5 for one full sleep cycle. I’m going for 4.5 hours of sleep tonight.</p>
<p>what are you guys talking about? what cycle?</p>
<p>I always go for cycles of 1.5 hours.
shoot for 6 hours at least.</p>
<p>it is 1.5, studied that in Psych</p>
<p>yup me too 
it varies from person to person but 90 minutes is about right - i think they get a little shorter the longer you sleep</p>