I will usually wake up at 3 am, The witching hour! There might be something to that... Also, I have a chance to develop insomnia after I stay up past 12, which is quite irritating when I try to fall asleep, but I can't, and then the following day I'll be so drained from the lack of sleep that I'll crash in class... And then wake up very confused and uncomfortable several minutes later.
EDIT: Forgot to mention my body's odd circadian rhythm, when allowed to do what it wants, my body (if not in an insomniatic state) will just fall asleep at around 3 am, and promptly arise at around 2 pm, which means I miss about half the day due to my really late sleep patterns. I feel great after that though... But school starts at 7 in the morning! Yippee! Nothing is healthier than disrupting your body's natural rhythm!
EDIT: Forgot to mention my body's odd circadian rhythm, when allowed to do what it wants, my body (if not in an insomniatic state) will just fall asleep at around 3 am, and promptly arise at around 2 pm, which means I miss about half the day due to my really late sleep patterns. I feel great after that though... But school starts at 7 in the morning! Yippee! Nothing is healthier than disrupting your body's natural rhythm!