There is something seriously wrong with my biological clock. For the past one week plus, i have been feeling lethargic. I will start to feel sleepy at about 9 or 10pm, just the time when i plan to start to study. And the whole night will turn unproductive. And i wake up at 4am. Not that i wanted to, but my body just automatically wakes me up :/ I think something gone haywire.I woke up at 4 most of the time is due to the urge to pee. So when my sleep is disturbed, it's hard to get back to sleep. Cuz i'll feel the tension, thinking of test, work undone.... And hence, waking up early causes drowziness at night. It's a cycle!! I don't want this to go onnnnnn. boo. I missed those days when i can sleep like a PIG. Can sleep whenever, wherever.