This had an effect on me about a year ago. I had to move the furniture in my room to paint the walls and somehow having the bed in the center of the room made me wake up with sleep paralysis two or three times in the same night, and my dreams were the most vivid I ever had. It was pretty wierd and I think the same thing happend when I was younger too. So from my experience it's something that is only slightly different from normal that has any effect. Sleeping in a different place altogether (like a hotel room or friend's house) doesn't have the same effect.