Nestor is in the middle of a fantastic dream. what is his body doing? acting out the movements of his dream twitching uncontrollably his arms are likely moving, but not his legs nothing

Nothing is likely taking place. During REM sleep, which is when dreaming usually takes place, the body is usually in a still state, with eye-twitching as the only movement that is experienced. The body usually does not do anything to "act out" the movements experienced in the dreams.