2. On Your Back, Arms Up
This so-called “starfish” position is also good for the back. Whether you have your arms up around your pillow or not, sleeping on your back may also help to prevent facial wrinkles and skin breakouts. However, like the arms-down back sleeping position, this one can also result in snoring and problems with acid reflux. Plus, having your arms up can put pressure on nerves in your shoulders, leading to pain.