For some reason I keep waking up at around 6am in the morning. The thing is in the beginning of Summer I would wake up at around 2pm since I would stay up late. When I had school I would either wake up at around 5am or 6am.

Why is my internal clock making me wake up at 6am? Is there any way I can stop waking up at 6am 'cause theres no use in me waking up that early since I want to get atleast a little bit more time sleeping. Any help is appreciated ^-^