(06-19-2013, 09:28 PM)sleepjunky Wrote: it is a little hard to breathe out with pressure of 4, but not terribly so.
You will get used to that. I have a much higher pressure setting, and it is now to the point when I wake up, breathing feels "normal" and I can't tell if the machine is still working or not. A couple of weeks ago, it took physically lifting the mask from my face for me to realize that we were having a power failure and my CPAP machine wasn't working.
I don't know if you will feel this at your lower pressure, but I did notice that my diaphragm muscle had to be toned up for the initial week or two against the increased exhale pressure before I got completely used to it. Of course, like exercising any muscle, there was a bit of discomfort in the morning for that initial time.