Hi everyone. I was diagnosed with sleep apena about 2 years ago and have been using a C-PAP machine since. For the past four months or so, I haven't felt like I needed the C-PAP machine because I wasn't waking up tired and my partner told me that I had stopped snoring. I have also lost around 70 pounds in the past year and a half (down from severely obese at 5'6 289 to obese at 217), which I credited for me not having the symptoms of sleep apena anymore. Here's my problem- for the past 3 weeks, I've been waking up tired and snoring again. I haven't gained any weight, so I'm suprised to feel the symptoms again. Two changes that I can think which may be causing the apnea to recur: 1. I have been more stressed than normal over the past 3 weeks. 2. I changed my work-out routine slightly, switching from running on the treadmill 5-6 days a week to doing step aerobics 5-6 days a week. Not only did I change the routine, but I was as consistent in the past 3 weeks and missed most of one week of exercising daily (either cardio or weight lifting). My more healthful eating habits have stayed the same over this period of time.
Do either these changes seem like things that would make my sleep apnea come back with such vengenance? While I haven't lost weight, I haven't gained weight and I'm back to my regular exercise routine. My stress level is still high, but could that in and of itself cause a recurrence? Any insight you have into this would be helpful.

