From very early writings it is very clear that nose breathing was considered the “thing to do” and mouth breathing indicated a lack of class, stupidity or some form of deviant behavior.
An artist named George Catlin (1796-1872), after living with and observing native Americans for over 40 years, said “If I were to endeavor to bequeath to posterity the most important Motto which human language can convey, it should be in three words—Shut your mouth.”. He then wrote “Shut Your Mouth and Save Your Life“, describing his experience, observations and conclusions.
The evidence continues to mount that the ONLY way we should breathe – ever – is through our noses, inhaling and exhaling, during sleep, exercise, illness – you name it.
“Why?”, you might ask, “what benefit is there to nose breathing only?”