We all tend to prefer certain sleep positions, but if you’re prone to heartburn, you might want to change some of your habits for the sake of your health. If you’re used to sleeping on your right side, it might be actually one of the reasons you’re experiencing annoying heartburn. Sleeping on your right side relaxes the muscle that connects the stomach and esophagus and is supposed to defend against reflux. Try to sleep on your left side instead, as this position has been proven to reduce heartburn.