The alarm this morning was set for 4:30 because
a) Rob had some work to do before work
b) I wanted to wish my beloved a very happy birthday ... if you know what I mean
c) I had to clean the bathroom
It seems that because I knew the alarm was going off in an hour and a quarter, my brain felt that going back to sleep after I woke up because my whole arm had gone numb (was lying on it funny) was not worth the effort.
That being said, I have a virtually sparkling bathroom now.