Dreams.

Dreams A dream is a series of thoughts, images, or emotions occurring during sleep. When this happens it's like having an experience of waking life in the characteristics of a dream. There have been many scientific studies on how, and why, people dream. When you dream you go through various stages. Before the first stage of sleep, a transitional period called hypnagogic occurs. Hypnagogic is when the muscles relax and a person often experiences sensations …

…that something is more or less likely to happen, not that it will or will not happen. Dreams do not convey information about some immovable fate or destiny, but offers hints, warnings, and suggestions about various situations. There have been many studies dealing with dreams, and for the most part the world is still unsure how, or why, they happen and why we can hear, see, and have sensations all while in our unconscious mind.