It's the strangest thing. The sun coming UP makes me tired. The hours between 5-9 A.M. are the very worst hours of the day for me, cognitively, motivation wise, and I cannot tell you how many times I have turned off my alarm clock without ever remembering it.
Why can't people get up at a decent hour? Say...9 AM wake up sounds perfect. 10 is better, but I will make a deal.