This morning, I woke up after getting 4 hours of sleep, and fell into a half-sleep about an hour later (I laid in bed the entire time).
At some point in this half-sleep, I remember seeing only blackness and performed the "hold nose and breathe" RC. I moved my hand to my nose and held it, and could breathe. I was sure that I was fully covering my nose. So, I didn't actually move my hand to my nose, I just thought I did (thus I must be dreaming), yet when I became lucid all I saw was the blackness, and then I realized I was in my bed and opened my eyes (in reality).

Can anyone explain?
(if you don't understand some of this account, tell me and I'll try to clarify, but I'm having a hard time articulating it)