I had the sleep study years ago. It showed I had 31 episodes in an hour. After the second test WITH the cpap, I had 2 episodes. People have up to 200. Mind is mild. I have the nasal cpap. Sometimes I sleep with it and sometimes I wear it the required 4 hours. Have to wear it 70% of the time which is at least 21 days out of the month for Medicare to pay for supplies. However, I did sleep until 6:30 one morning, I'm usually up at 2:00, and didn't wake at all during night but also didn't sleep in my cpap. The purpose is to sleep uninterrupted because it's the stopping breathing that causes you to wake up and with a continuous flow of the air from the cpap, you can. I have also awakened while wearing the cpap too. Some nights I wear it, sometimes I wear it while laying on bed watching TV before I go to sleep, and some nights I don't wear it at all. I still sleep only 4-6 hours a night but I'm not tired or sleepy the next day either. I figure I'm just going through a phase where I can get by on very little sleep right now. I'm 65 and had the cpap for about a year and a half.