> Setting the alarm to the latest hour that I can start to work it never wakes me up

Funny enough, I have the same strategy but the exact opposite experience -- it _almost always_ wakes me up, even when it's set for 11 am. I don't disagree with you though, I just think it's funny how different human experience is. And there are benefits too, it's easy for me to stay up late, and a lot of my best work comes naturally at 1 am. But basically nothing good happens before noon.