People see the dreams every night. Scientists from the University of British Columbia understand the issue why this is happening.
Modern science knows little about the work of the human brain. Sleep is a complex and versatile process. While scientists can't answer the question of what happens with the nervous system during dreaming.
During the night a person sees an average of 2-3 dreams. However, remember not all dreams. Yet there are breaks in dreams, when the rapid phase of sleep no visions comes.
Most often the night without dreams are held with strong daytime fatigue. Sometimes the brain fights, then the nervous system "reboots" in the fast phase of sleep, and the person has no dreams. At this time, there is increased sensitivity sleep when every rustle is able to awaken.