Surprised to see no mention whatsoever of sleeping position. My experience is that very few people snore when sleeping on their side, but that back-sleepers are highly overrepresented among snorers. My father suffered, unknowingly, from sleep apnea. I recommended that he teach himself to sleep on his side instead, by propping himself uo with pillows or sewing a ball into the back of his pajamas. He taught himself without tricks like that, and he no longer has sleep apnea. To end a bad habit of mouth breathing, another simple trick is to simply tape ones mouth shut with surgical tape in the evening. I’ve done this myself to get back to nose-breathing after bouts of rhinitis. Simple behavioral modifications often trump overpriced hitech solutions and invasive procedures