Hi, I wanted to give an update. Capnometry biofeedback worked better than I expected. My baseline ET CO2 went from around 27mmHg to around 40mmHg in the first 1.5 weeks of using the device, and stayed there for the whole month I had access to the device. (I’ve now returned the device.) The key thing I discovered was that even though I was already nasal breathing 99.9% of the time, my nasal breaths were still quite audible and so I was overbreathing because of that. The biofeedback+coaching allowed me to switch my breathing to a silent nasal one in stages. I still experience air hunger, but it is a lot more subtle than before. I still have trouble talking, some of the time (I think talking makes me overbreathe, so if I start out with no air hunger then I can talk for quite a while, but if I start talking when I already have some air hunger, then I quickly reach my limits). I still on occasion mysteriously have a lot more air hunger than normal and feel like I “forgot how to breathe”, and I wonder if that means I have some sort of autonomic problem… I’ve been writing up a lot of my thoughts here. I might retry capnometers in a few months or a year or something, but for now my plan is to go back to (original Russian-lineage) Buteyko method and really logging the time (rather than half-assing it, which is what I was doing previously with Buteyko). Feel free to ask any questions.
Hi, I wanted to give an update. Capnometry biofeedback worked better than I expected. My baseline ET CO2 went from around 27mmHg to around 40mmHg in the first 1.5 weeks of using the device, and stayed there for the whole month I had access to the device. (I’ve now returned the device.) The key thing I discovered was that even though I was already nasal breathing 99.9% of the time, my nasal breaths were still quite audible and so I was overbreathing because of that. The biofeedback+coaching allowed me to switch my breathing to a silent nasal one in stages. I still experience air hunger, but it is a lot more subtle than before. I still have trouble talking, some of the time (I think talking makes me overbreathe, so if I start out with no air hunger then I can talk for quite a while, but if I start talking when I already have some air hunger, then I quickly reach my limits). I still on occasion mysteriously have a lot more air hunger than normal and feel like I “forgot how to breathe”, and I wonder if that means I have some sort of autonomic problem… I’ve been writing up a lot of my thoughts here. I might retry capnometers in a few months or a year or something, but for now my plan is to go back to (original Russian-lineage) Buteyko method and really logging the time (rather than half-assing it, which is what I was doing previously with Buteyko). Feel free to ask any questions.