Thanks, everybody for your insightful responses. It was very educational, although I have no idea how did it turn into a cat discussion all of a sudden
The reason behind my question is that I had a sleep test done and had a very mild sleep apnea detected (AHI: 5.8 ). I wasn't very convinced because things looked much worse when I recorded myself and could clearly hear myself gasping for air, snoring like crazy, and wake up after shallow breathing etc. My main issue was heavy fatigue, so I was confident that something was off.
Also I later found out that scoring was done by a nurse. This is when I had enough and just bought an APAP to see what will happen. Almost three weeks later, and I can safely say for some nights that I don't remember ever sleeping better. My fatigue is gone, and only returned when I experimented with mask sizes, different pressure settings and when I cranked humidity too high, and condensation kept waking me up all night (until I figured out what to do).
So, with Sleepyhead I could clearly see that there is a lot going on. That is why I wasn't sure if it is even possible for someone with such a low AHI. Now I need to learn how to determine my ideal pressure, but I will make a separate topic for that.