First night, placebo or real?

I too was fortunate to experience improved sleep immediately, but I also started my journey knowing what to expect, as my father had severe apnea (and COPD) and had been treated with Cpap for almost a decade. I knew from friends and family that I too had it, and I knew Cpap would help. It's not placebo, it's working.

Also, for me, with severe apnea I never remembered waking up or having my sleep disturbed... it was "10:30 to 6:30" every night, except nights where I stayed up late not wanting to go to sleep (and not knowing why). I'm sure when I had untreated apnea I woke up quite a bit, and my sleep schedule was aroused as well. So I know no matter how many times I "wake up from therapy" it's better than without - I was just blacking out before from the lack of oxygen and not remebering waking up!