This chronically happens to me. Getting up early, even though its school, I'm always cranky. But don't say that I'm not used to it, cause during summer I woke up at the same time everyday to go to football practice. So in the mornings I'm a jerk, but once I get to school, I get sleepy, but then I'm fine after lunch. Also, Your probably just bored in Gov, so you tend to want to fall asleep.