I've used a cpap or bipap for probably 30 years, and it definitely helps with sleep. But I still can't sleep as many hours as I have aged compared to when I was younger.

Part of that maybe is I just do not work as hard as I used to. I do notice if I do a lot of physical work I do tend to sleep longer. So that could be part of less sleep. I used to be dog tired all of the time because of the hours I worked. Now I simply do a lot less that is strenuous.