Chronic mouth breathing skips nasal filtering, humidification, and nitric oxide production. It is appropriate above threshold exertion and during specific breathwork exhales; the rest of the time it is a target for retraining.
Breathing through the mouth instead of the nose. Common at rest and during sleep; typically a habit that can be retrained.
Chronic mouth breathing skips nasal filtering, humidification, and nitric oxide production. It is appropriate above threshold exertion and during specific breathwork exhales; the rest of the time it is a target for retraining.
See also
Learn · Compare
Nasal vs Mouth Breathing: When Each Is Appropriate
Most of the time you should breathe through your nose. There are exceptions. Here is the real breakdown, not the internet's version.
Learn · Programs
Nasal Breathing 101: How the Program Works
A three-week program that retrains nasal-default breathing during rest, sleep, and light exertion using gentle paced sessions.