Last night I was using my CPAP and had an experience Ive never felt before.
Basically, I would wake up taking these massive super deep and slows breaths, like my lungs had infinite capacity. It was very relaxing but different at the same time. I would also wake up with my entire body feeling like it was tingling. It is 10am here and while the tingling feeling was only in my sleep, I still have this very subtle residual effect (imagine that feeling sometimes after your leg falls asleep and you stand up again).
Very fucking weird.