I had to google that, "REM Behavior Disorder"
You just sent me on a 'research journey'.
My mother would tell me stories from when I was a kid. I would sleep-walk. I remember stories like she went looking for me and found me walking down the road towards the highway in the dead of night with no light, going to the chicken coup and bringing back baby chicks and putting them in the oven, urinating in the bathtub instead of the toilet. She believed that waking a sleep walking person would kill them, so she would cox me back to bed. Once I was staying at my cousins and in the morning there was a huge concern that the door had been unlocked during the night. I just hung my head alittle and suggested that I may have been sleep walking, AGIAN. As a teenager, I threw a frozen pizza in the oven and turned it on without taking the plastic off and going back to bed. I also went through periods of restless leg syndrome, although I didn't know that it had a name or there was anything abnormal about it.
I thought I outgrew it. But after I got married, I would have a dream I was having sex and I would come out of the dream state actually having sex with my wife. This happened occasionally.
It must be hereditary. My son talks in his sleep a lot. A lot of times he will sit up and look right at me and talk, but he is not awake. The non-sensical things to come our of his mouth can be hilarious. Once when I was visiting a friend from youth ministry, we stayed the night at his place. My son had went to sleep while we were up visiting. My son started talking in his sleep, so we decided to mess with him for our amusement. He ended up getting up, going to the door to go somewhere but could not get the locked door open. He then picked up his shoes by the door and walked to the sink and put his shoes in it and then went back to bed. He was unphased by us not being able to contain our laughter.
What's not so funny is many times my son would seem like he is fighting and arguing with someone in his sleep. My heart would hurt trying to imagine the conflict in his being for this to manifest.
Sometimes a simple analogy is all you need to make things crystal clear. Smile - Akasha224