What about those of us who only sleep 3-4 hours a night? :p
And, yes, that is my normal weekday sleep pattern (I go to bet around 2am,, probably fall asleep around 2.30-3ish since I'm NOT one of those people who can just drop off as soon as their heads hit the pillow - alarm goes off at 6.30 but you can bet your bottom dollar I'm awake well before then). Meh, I practically keep Aussie time and then some!!
Even when I "sleep in" (on a weekend) I'm usually awake to some degree (as in aware I'm not asleep even if I'm not truly awake). I would love to be able to just sleep but it mostly eludes me.
Unless I get rat-arsed. That DOES tend to help somewhat! :p