I’ve noticed this for a few months, now. I’ll get up in the morning, start my shower, then wander into the kitchen to get my lunch ready. Only the door from my bedroom to my kitchen/dining area is locked. (I live in a small apartment.)
I do not lock the door when I go to bed!
So this must mean I’m getting up in the middle of the night and locking the door, for whatever reason. My guess is that subconsciously I don’t feel safe; maybe deep down I think someone might break into the apartment - but somehow that one locked door will keep 'em out.
As far as I can tell, that’s all that I’m doing. If I had a video camera, I’d tape me. You know, just to see if anything else is afoot. Can you imagine if I walked out into the living room, turned around, and then locked the bedroom door and shut it? I’d be shut out of my bedroom. Well, hopefully that would wake me up pronto!
I have walked in my sleep exactly once. I was on an all-night flight to Brazil, and went to sleep. I woke up, and had the sensation that everyone in this section of the plane had moved one row forward. Then I realized that I was sitting in the row behind the one I had fallen asleep in (there were quite a few empty seats). Somehow, in the night, I had unbuckled my seatbelt, gotten up, moved one row back, and sat back down. All without waking up.
I know that’s not really strange as far as sleepwalking goes; it’s just strange in that I’ve never had any indication that I’ve ever sleepwalked before or since.
My sister is a sleepwalker. She has woken up countless times, fully dressed, with no idea how she got that way. She also used to have nightmares. I used to hate sleeping in my parents house when the parents were away. (She had a nightmare one night that a giant spider was crawling thru my parent’s bedrrom window, and she went screaming into their room and dove (dived?) on top of my mother “to protect her.”