Has anyone ever tried breathing with one of these on? My husband has the full face mask since he needed a very high setting. I have tried breathing with this one and it is so unnatural, I can't imagine being able to sleep with it!! His sleep apnea seems so much better now than last summer. His lymphedema is under control so that seems to make a huge difference. He can now fall asleep without it on and breath normal but as he gets into deeper sleep I can tell his airway starts to close and time to get the mask on. I would think that the setting could be safely lowered if he had another sleep study. Maybe that would make it less annoying to wear at night.