Is it normal to sleep with your mouth wide open?
Mostly.Normal for most people
Yes, sleeping with your mouth open is fairly common and often happens because of a stuffy nose, sleep position, or habit. If it comes with loud snoring, gasping, or feeling unusually tired during the day, it’s worth getting checked.
It’s pretty common to wake up with your mouth open or dry. A blocked nose, allergies, or simply how you’re lying can make nose-breathing harder while you sleep, and some people naturally sleep with their jaw relaxed open.
By itself, it’s usually not a big deal. If you also snore loudly, gasp or choke in your sleep, or feel very tired during the day, mention it to a healthcare professional—those can be signs that your breathing is being disrupted.