Personally, (daily user of cannabis, D8, thca, kratom, and couple drinks nightly for years) I've noticed a few things. I still have some (less than avg) memorable dreams using just cannabis or kratom. Since I started using D8 and thca I rarely have any dreams ever or at least ones I remember. If I do have a dream it usually has some kind of subconscious message and it's super wild and I actually feel I have superior dream control since.... Again personally I don't care if I'm having dreams other than the fact that I think my sleep quality is lower. Honestly sometimes I think I prefer to not have dreams because I used to have hyper realistic and borderline horror nightmares as the only types of dreams I had. Oh and since smoking D8/thca on the regular the length of my dreams is noticably shorter. Which is surprising when you realize dreams aren't typically that long any way so for me to notice this change certainly means something I would think.. I really wonder if any of these things might have some type of application for people with sleep paralysis. All that said, I wouldnt recommend D8/thca to most everyone as delta9-thc is much cleaner and for most people going to be way more ideal. The only reason I got into d8 and thca is because I'm pretty poor and it's harder to pay $10/g than 3-5/g..