Most often, terrible dreams dream young children. They ask adults even leave the light in the room when going to bed. So anxious and exciting children perceive dreams. From kids often nightmares squealing, screaming and crying. Often they are accompanied by a cold sweat. This behavior is caused by the fact that the children of the day get a huge amount of information, and in a dream body tries to put everything in the system. But night terrors are very useful for the child, so it's faster to cope with stressful situations in real life.
Adults also have nightmares. And sometimes one and the same dream for several years. In dreams - the horrors of common actions such as the pursuit of a hero, fall from height, stiffness, or being late for an important event in my life. Scientists have figured out how to interpret all of these processes. If a person is afraid of losing their social status, in a dream, he will fall from a height; and if he dreams chase - he clearly wants to get rid of the bad traits of his character.
Night nightmares usually those people who are prone to fatigue or exhaustion, or those who constantly thinks about something important and dwell on it. Sleep is accompanied by several phases, some of which are slow and fast phase of sleep. The first phase is characterized in that the operation of the human brain at this moment is minimum (it is almost switched off), and a continuous smooth breathing. In REM sleep a person spends as much energy as in the daytime wakefulness; brain work is the same, the pupils under the closed eyelids are mobile. It is in this phase people nightmares. On the basis of these experiments, scientists have learned that the most terrible dreams dream women, not men.