I haven't *tried* staying awake until 11, but I've stayed awake until 4am.
11 is when the bear is asleep and making all his loud snoring bear noises and my head sounds like "Fk you S-bear. Shut the fk up. I wanna go in there and plug his nose with carrots and his throat with an orange. How is it fair this dude just gets to lay down and crash into the loudest deepest sleep ever for 12 hours while here I am on a Tuesday haven't sleept since Friday night.

And I can't wear ear plugs. The feeling bothers me more than the noise.

So yeah, 11 is typically my wake up time.