It does happen sometimes at night for me, but after a good run, bike ride, or long walk, I can be just as creative as at night. It does help to sometimes have a glass of wine but that could be a bad habit to start. I agree the wine helps sometimes if your tired and just not in the mood to be creative but yet you need to get something done.

I'm definitely most creative late at night (and after a few glasses of wine). There's something about the darkness that helps things flow!