Admittedly I didn't either, stayed up for another like 2 hours working on my final project for a class lol
Ah alright, and now I know -nods and ruffles Shaneman's hair- ^^
Only half hour huh? Well at least you didn't stay up all night....although staying up when your eyes were already burning, shouldn't do that haha.
Maybe your body is trying to tell you to go and get some more sleep.