Do you wake up at odd times of the night, often around the same time? It may be your subconscious trying to tell you something. Follow the link below to see what, by hour, your waking could mean. Personally, and I won’t tell you when I wake often :), to be an extremely accurate description of why I am waking.
Check it out, see what you think. Who knows, you just might learn what you need to get a better nights sleep.