Nap on your back? You're confident and at ease with yourself. Many kings slept this way it's a pose that assumes everything is coming to you.
Those who slumber on their stomachs like to be in control of things. They're hands-on, face-to-face types.
If you snooze on your side, you're emotionally and socially secure. About 65 percent of us are these centered types.
If you curl into a ball, you're sensitive, cautious and introspective, literally wrapped up in yourself.