I have often wondered if sleeping in zero gravity changes the nature of REM sleep. Are dreams different or more intense in free fall?

That is an exceedingly good question. I don't know the answer to that. We have studies EEGs in space

I myself will try to increase my dream proficiency before I go into space this time. Such that, you know, increasing your dream proficiency, you can practice that, so instantly when you wake up you work on remembering your dreams before you think about what the day's events are about

So I do want to specifically work on this mission to capture my dreams and to examine them and see if they are different. I do not know right now how different they are. But many scientists have studied EEGs