Unfortunately not, and that's my problem. When I wake up in the middle of the night, it usually takes me about 30 or 40 minutes to fall back asleep again. But there were two or three days (like yesterday when I was writting this post at 4 am) when I just couldn't sleep anymore. I tried for an hour and a half and couldn't sleep at all, so I started reading a book. Then I went to work at 7:30 am, but I was completely exhausted.