Sleepwalking is correlated with stress levels. I've sleepwalked a few times in my life; some I half-remember, but most not at all, I only know if I find out from someone else like family/friends/partners.

When I was a teenager, I had a wall scroll that hung above the head of my bed. One morning, I found it piled on the floor next to my bed. It could have been one of my family, but they all denied it and there's no motivation anyway. I had to conclude that I did it in my sleep, but it's stuck with me because I've always found it extremely disturbing that I'm up and about while I'm completely (or nearly completely) unconscious. I've lived in a few skyscrapers with windows and balcony doors that opened more than enough for me to jump, and the idea that I'll wake up halfway down scares the everfucking bejeezus out of me.