8. On your back. 

Sure, it can get the job done, but it’s pretty boring. Who do you think you are? A character in Little House on the Prairie who has to sleep with her sister on the tiny bed that Pa made? Have fun with the post-nasal drip.

7. The Thrasher.

You throw punches and kicks all night without knowing it, turning so much in your sleep you wake up wearing your sheets as a toga. Do all your dreams take place in the mosh pit at a Pearl Jam concert?