Hi Gabriel,

To further this conversation, it is known asthmatics have lower levels of carbon dioxide and by practising the Buteyko method, it helps to raise carbon dioxide levels which then act as the bronchial dilator.

I thought I would mention another part of my Buteyko method used each night as it might be useful to those who are also mouth breathers.

Regardless of having a broken nose twice and thought I would never survive this method,
just before I go to sleep I place a piece of tape over my mouth. (Don't laugh) It is now
literally the width of the 1" tape x 1/4". Covering the whole mouth is now not necessary as it becomes a reflex reaction to keep mouth closed when trying to open it through sleeping.
I now never wake through the night. It takes practice for it to become the normal, and eventually makes so much difference.
Some of the benefits are:
the air is filtered
the air flow is more regulated
the breathing becomes more rhythmic
the air temperature is regulated
it does not dry out the saliva in the mouth
it reduces the chance of sleep apnea
it reduces the chance of snoring
there is less struggle to breathe
The benefits are endless and you can read up on many other benefits from creditable medical
websites.
I hope this might help others who are willing to try for a period of time.
Coopstar1949