Did you know that everyone dreams, every night? This is a biological fact. We know from dream research that during the course of the night there are periods of rapid eye movement (REM sleep) that occur when the sleeper is vividly dreaming. The only reason someone will tell you they don’t dream is because they don’t recall their dreams. Although there is much controversy as to the effects of dreaming on our waking lives, there does seem to be ample evidence that dreaming is involved in psychological “maintenance,” and emotional stability.