What day is it?
In other disorienting news, I had gone more than two weeks without any soda at all until last Friday. I bought a Diet Pepsi on Friday to help keep me awake through a marathon study session and drank it at about 9 pm. At 3 am Saturday morning, I had the most uncanny and horrible experience of knowing myself to be awake but being unable to move or do anything about this. A quick Wikipedia check marks this as probably being "REM atonia," a perfectly normal part of the REM cycle in which your motor neurons aren't firing. It's perfectly fine with being the usual thing so long as you aren't awake for it. Not fun. Needless to say, I didn't sleep especially well as a result of caffeine and paranoia about that event. The good thing about caffeine is how quickly you can adjust to it. The next night, I saw Tinker Tailor Soldier Spy (phenomenal, by the way) and drank 44 oz of Diet Coke and though I behaved like a speed freak for a few hours after, I slept just fine.