Part 1 of Essay
Nightmares: .Sigmund Freud, who was a famous researcher of the theory of dreams, thought childhood punishments caused nightmares. Also, according to modern sleep laboratory's experiment rapid eye movement occurs during nightmare. Nightmares and night terrors have two major differences. Night terror happens in early night w ....

Part 2 of Essay
.... nobody believes demons or evils produce nightmares. Actually, the physical illness, mental illness, stresses and helplessness produce nightmares. From the research of the people who have experienced nightmares, it has been learned that most people continue to have nightmares from childhood to the present. According to scientist, these experiences are caused by illness of the above. Especially, these people who have experienced nightmare are influenced very easily. From the data, 70% of the people who have nightma ....