What can dreaming help people to do?

W: Hello Fred. You don’t look so good. What’s the matter?
M: I just didn’t have a good sleep. It seemed I dreamed all night.
W: Well, just take it easy. Everyone dreams to stay healthy.
M: Do you know how long people usually dream during eight-hour sleep?
W: For about one and a half hours on average. Dreaming helps us to rest our minds. What did you dream last night?
M: It was terrible. I dreamed that I was chased by someone. And I was running all the time.
W: This is a very common type of dream. Over 70% of people have dreamed that they were being chased but unable to run away for one reason or another. This type of dream often happens during the period of great worry. Worry often brings about this kind of dream. It is particularly common among women.
M: How about dreams of violence?
W: Dreams about violence are much common among men than women. The differences are not very great.
M: Are there any more kinds of dreams that men experience more than women?
W: Yes. When people are in financial trouble, they often have dreams connected with money. About a quarter of men have had this kind of dream, but only 15% of women.
M: Do you sometimes have dreams about falling?
W: Yes. Falling from a tall building or a mountain is another common type of dream. It is related to muscular tightening.