How to Sleep With Your Mouth Closed: A 3-Step Nighttime Routine
If you've been waking up with a dry mouth, low energy, or a sense that your sleep isn't restorative, there's a good chance your mouth is falling open at night. Most of what you can do starts before you even get into bed.
Your 3-step bedtime routine
Step 1 — Saline rinse. Flush nasal passages of bacteria, allergens, and debris so nasal breathing is easier overnight.
Step 2 — Nasal stick. After rinsing, use a BoomBoom Nasal Stick to support open, comfortable nasal breathing.
Step 3 — Mouth tape. Apply a gentle mouth tape over closed lips before bed to support closed-mouth positioning all night.
Three steps. Five minutes. A completely different night of sleep.
Best sleep position
Back sleeping makes it easier for the jaw to drop open. Side sleeping naturally encourages a more neutral jaw position. If you're a back sleeper, experiment with side sleeping.
Tongue posture
The tongue should rest gently on the roof of the mouth — that contact supports nasal breathing. Myofunctional therapy can retrain tongue and oral muscles if posture or mobility is limited.
How long does it take?
Most people find that within a week or two of using mouth tape nightly, nasal breathing starts to feel like their natural default. Consistency is key.
Sleeping with your mouth closed naturally isn't about willpower — it's about setting yourself up for success.
About the Author: Dr. Chelsea Pinto, DDS is a graduate of the Herman Ostrow School of Dentistry at USC with over a decade of expertise in airway-focused dentistry.