My breathing at night has improved, but the way the machine works, is that it blows filtered, humidified air into my nostrils, gently at first, but with more force as needed to keep air going into my lungs. My lungs are taking some time to adjust. The first few days I had trouble catching my breath during the day. I found I couldn't walk my normal quick pace, but had to really slow down. I thought it might take just a couple days to adjust, but soon I started to feel like I had a corset on that was squeezing the life out of me. I cut down on the hours I used the CPAP at night, but I wasn't improving. I called Symbious, to see if I need to make an adjustment on my machine, I got an answer back that some times the machine would slightly aggravate asthma, but if it was severe to call my doctor. I called my doctor, (this office, by the way, is nearly impossible to get a human on the phone) and got an appointment and eventually two inhalers, that have reduced the chest pain and improved my day time breathing significantly. I'm still a bit sensitive and now I think I'm cacthing a cold, but my night time breathing is better and I'm not always exhausted like I used to be. so life is looking up.
Here's a picture of my face mask, I'm not showing one on me since I'm too vain for that, this is the picture from the instruction manual.