When a person interacts with their daydream involving body movements order to replace physical or sexual feelings with another human being is called masturbation. Could it be that what MDr's are interacting with the daydream involving body movements to replace emotional feelings that are usually shared between other humans?
I don't know if we can put all dreams into that category but I definitely feel like we need to watch out for recurrent themes to see if they reflect unfulfillment.