Dreams last 10 to 40 minutes. Men and women have about the same emotions as they dream. The longer, more vivid and dramatic dreams are early in the morning, shortly before awaking. Actually, most of our dreams are common-place and dull. We remember and talk about the more interesting ones.
More dreams involve being passive or playing than involve work or studying.
It is a bit puzzling to wake up from a scary or sad or violent dream with an erection. In contrast with our frequent sexual arousal, only an occasional dream is X-rated. Bettelheim found that he and other prisoners of German concentration camps had dreamed of food and escape while being brutalized, but it was only after escaping that the survivors started having nightmares about the atrocities. Decades later they were still occasionally having nightmares that they can not escape the horrors. Dreams and nightmares are fascinating to most of us.