sleep or not?

Last night was one of those nights where I didn't know I was sleeping until I woke up. It felt like I stared at the ceiling, trying to fall asleep for hours.

I did sleep pretty well from about 10:15 until 2:15 when the monster woke up. But from the time of 2:30 to 4, it felt like i didn't sleep at all. I must have though because I was awakened by a certain kitty cat to let her out of the room. 

From 4-5:45, i tossed and turned, arousing only when my alarm went off at 5:45. Man I hate waking up early. Today I am totally dragging, unable to keep my eyes open and my productivity is severely lacking. 

Do you ever have days like this? Any secrets to stay awake?