I'd like to think so.

As there is no such thing as time, just a dimension we can stroll along, bear with me , and as our consciousness can exist outside our mind, and why not if the quantum world says particles can be everywhere at once, then when I sleep I'm letting my mind explore a dimension I can't get to with my psychical body.
When I wake up all the possibilities that my mind could explore collapse to the one I expect to see, until the next time.

Strange though! I only ever seem to explore the past, I think I was a roman soldier not so long back, never a spaceman in some futuristic world

Anyhow! I travel back in time and in my dreams it's real, just like this dream I call reality that I can't wake up from