Hi Johnmost of our breathing problems are related to long term hyprventylation and therefore to low CO2. It may cause heavy yawning, really exhausting, and constant feeling of not breathing deep enough. If this is what you feel - like you always need to breath a bit more - then thi is it. If you do some breathing excercises (unfortunately can not tell for sure whcih exactly, but probab,y you may google for hyperventilation), this would be easier to stop. I personally use distraction but in heavy cases excercises must be better.
