Mouth taping is the practice of sleeping with one's lips held shut by a strip of surgical tape, which prevents mouth breathing during sleep.
This supposed life hack gained popularity through social media in the 2020s.
[1] Those who advise in favor of it attribute a variety of health benefits to it, although these claims have not been scientifically verified.
[1] A few small studies have investigated whether mouth taping alleviates sleep apnea.
[3][4] They found that mouth taping reduced snoring, which may help the snorers' partners sleep better.