Here is something I have always wondered about. Given my interest in body language this is something similar "sleep body language". I sleep in the Yearner position therefore I am open-minded and still cynical, suspicious, and stubborn about sticking to decisions once they are made. Which is pretty accurate!

Our lives, the amount of sleep we get, and how well we actually rest during those nighttime hours may change drastically over time. However, one sleep researcher says that our body position in bed could say something about who we are, not just what else is happening in our lives.

The rest of the article is here, and its quite interesting as well.