5. Starfish

When sleeping like a starfish, you lie on your back with arms up near the pillow and legs outstretched. Idzikowski says starfish sleepers value friendship, and that while they prefer not to be the center of attention, people who sleep in this position are good listeners and quick to help others.

The back sleeping positions are the second most popular positions, after side sleeping. One study found that, on average, over one-third of sleeping time is spent on the back. Based on his 1970s research, sleep researcher Dunkell claimed that people who sleep on their backs are more self-confident. Dunkell also said back sleepers are likely to be more open and sensation-seeking than other sleepers.