Mouth Taping Is Not the Real Goal

Mouth taping has become one of the biggest sleep trends in recent years.

The promise sounds simple: tape the mouth, breathe through the nose, sleep better. Personal tip: Goodnight kiss before you tape your mouth ;-)

So to a degree, the physiology that mouth taping attempts to address makes sense.

Nasal breathing can be consciously controlled through the day, but not through the night. I have written a full article about nasal breathing here:

https://www.breathandwork.com/post/right-under-your-nose-the-forgotten-power-of-nitric-oxide-and-nasal-breathing

In short, nasal breathing has amazing benefits and is the superior breathing that helps filter and humidify air, creates healthier breathing resistance, and generally promotes slower, quieter breathing during sleep.

But the current online conversation around mouth taping is often far too simplistic.

Because mouth breathing is not always the problem itself. Sometimes it is compensation.

Mouth breathing is often compensatory

This is one of the biggest misconceptions around the topic. Many people assume mouth breathing during sleep is simply a bad habit that needs correcting.

But in reality, the body often switches to mouth breathing because nasal breathing is not working well enough and I have seen this myself with many clients that have some sort of airway restrictions. That can happen because of:

• chronic congestion

• allergies

• deviated septum

• enlarged turbinates

• narrow airways

• increased breathing resistance during sleep

  
  

In other words: The mouth may not be the cause of the issue.It may be the body’s workaround, because well your mouth is your backup system as our body loves redundancies.

Coming back to the topic, this is where aggressive mouth taping becomes problematic. If someone struggles to breathe properly through the nose at night, fully sealing the mouth may increase breathing stress rather than reduce it.

The overlooked middle ground: OSA and UARS

Conditions such as Obstructive Sleep Apnea (OSA) and Upper Airway Resistance Syndrome (UARS) are important to consider when discussing mouth taping and nighttime breathing.

OSA involves repeated airway collapse during sleep and is associated with fragmented sleep, oxygen drops, increased blood pressure, and cardiovascular stress. In some cases, people may be unaware they have it.

This matters because aggressively sealing the mouth shut may increase breathing stress if nasal airflow is already limited.

The body sometimes opens the mouth for a reason. Even “mouth puffing” during sleep may act as a pressure-release mechanism when breathing becomes difficult.

UARS presents slightly differently. People may not experience major apnea events or oxygen desaturation, but still experience increased breathing effort throughout the night.

Common signs may include:

• waking unrefreshed

• fragmented sleep

• teeth grinding

• frequent waking

• fatigue despite adequate sleep duration

Another layer often missing from the discussion is the nervous system itself.

Two people can experience the same degree of airflow restriction and react very differently.

Why?

Because breathing is tightly linked to stress physiology.

Some individuals are far more sensitive to:

• CO₂ changes

• airflow limitation

• nighttime breathing disturbances

This is part of why nighttime breathing deserves a more individual approach than simply forcing nasal breathing.

A more intelligent way to think about mouth taping

The physiology behind nasal breathing is strong. But the evidence specifically supporting mouth taping is still limited, while social media often presents it as a universal fix. The real goal is not forcing the mouth shut.

The goal is creating conditions where nasal breathing becomes natural and sustainable during sleep.

That may involve improving nasal function, reducing over-breathing tendencies, improving CO₂ tolerance, or addressing airway issues.

This is also why the type of tape matters. A gentler option such as MyoTape from Patrick McKeown's Oxygen Advantage supports the lips together without rigidly sealing the mouth, still allowing “mouth puffing” or pressure release if needed.

A simple morning check can also help. Ask yourself:

• Did I wake with a dry mouth or throat?

• Did I need water immediately?

• Did I wake unrefreshed despite enough sleep?

• Did I wake repeatedly during the night, including toilet walks?

None of these are diagnostic alone, but together they can offer useful clues about how you may have been breathing during sleep.

References

Guilleminault, C. et al. (1993) Upper airway resistance syndrome in adults. Chest, 104(3), pp.781–787.

McNicholas, W.T. & Bonsigore, M.R. (2007) Sleep apnoea as an independent risk factor for cardiovascular disease. European Respiratory Journal.

Li, H.Y. et al. (2015) The efficacy of mouth-taping in treating sleep-disordered breathing. Journal of Clinical Sleep Medicine.

Lundberg, J.O. & Weitzberg, E. (1999) Nasal nitric oxide in man. Thorax, 54(10), pp.947–952.