Sometimes I nod off watching a movie, and then I have to rewind, maybe even up to a half hour, to see what I missed. But laying down to take a nap I just can't do. I may feel sleepy, but if I lay don't I'm not going to sleep or doze. I just stare and the ceiling. But if I get sick, I usually crash in the middle of the day, and might sleep for 5 hours. That's like a once every two years thing.