Too Early

I woke up this morning after a lot of interrupted sleep. Last night I fell asleep watching tv, woke up for a few hours, fell asleep again, woke up again very groggy and went back to sleep. By the time I woke up for good, it had been about 12 hours since I first fell asleep. This isn't so unusual except for the 12 hours part.

It's weird to get a lot of sleep even if it was interrupted. I don't think I had any coffee yesterday. Could that be why I was so tired?