Nah guys, "sleep paralysis" is definitely demonic. I woke up one night and looked at an alarm clock and it read something evil, or like a number that was evil, couldn't move my body at all, felt an evil presence with me and looked at the end of my bed and saw a man in a cloaked garment, and I'm telling you I saw him just as I see anyone else... was no hallucination. and I felt his evil smile.
Don't believe me if you want, but it's definitely demonic, there's many people who report the same type of thing as me and/or the same feelings and it's not just a feeling associated with panic, it's dark.
It might be physical, but demons take full advantage of it, a lot.
As far as astral projection goes, I would say it's witchcraft. I believe it's possible and real, but deems witchcraft in my mind.
I used to practice lucid dreaming, however, and I believe that to be o.k. I think, I've had some really great lucid dreams. Some dark ones too, but some good ones.