Quoted:
NSF, maybe if you feel tired you might try SLEEPING as a drug.
Go ahead and experiment with sleep deprivation for a while, but I bet you'll do better and more precise work with 6-8 hours of sleep under your belt.
I may not retire rich as Creosus, but I aim at being a cratchity old bastard with a lot of life left in him.
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Dude, he's right. You'll never quite notice it at first, but your thinking really starts to dull after too many hours awake.
I remember sleeping 5 hours in a span of about 80 while finishing a nasty take-home final. The last 12 hours I was doing work that shoulda taken me 1 if i'd been alert enough. Your body feels allright after a while, but your mind isn't there - not to mention when you wake up later it's almost as bad as a hangover.
Week after, I just fell asleep studying for yet another final - got 10 hours, and aced the test next morning. The difference is only noticeable after the fact.
Yeah, I know, those extended work days are fun(Why do you think I'm on this board this late?), but push it too far and it's counterproductive, no matter how macho you feel.
And watch out with ephedra, too. There's also been high-blood-pressure-related deaths with that stuff.