Go to sleep, although I am not a doctor in this regard. But I can tell you responsibly that it is not good to sleep too much, nor to sleep too little. The sleeping time must not be too long, and conversely, it cannot be too short. Too long will take too long. It's too short. The time is too short. Actually I just think so. As I said at the beginning I am not a doctor. I don't know either.
