I'm weird with sleep...

-No matter how late I stay up, I always end up waking up early. I was at a sleepover a few years ago and I stayed up until 6, when my friend's mom made us go to sleep. I woke up at 7 and couldn't get back to sleep. I had to wait for the next 5 hours for any of my friends to wake up.
-I also don't sleep in at all. I think the latest I've ever slept in was 8:30 in the morning.
-If I wake up at a much earlier time than usual (anywhere between 3 and 5), I can't fall back asleep. I usually end up getting on my ipad anyway.