Each dream, including nightmares contains images from our day-to-day life. Sigmund Freud states that each thing we dream has a symbolic meaning which lead to the fulfilment of our subconscious wishes.

During REM sleeping, the neocortex reviews the neural connections and dumbs the unnecessary ones.

Dreams involving dangerous situations are very common and the Primitive Instinct Rehearsal Theory holds that the content of a dream is significant to its purpose.

The Continual Activation Theory proposes that the dreams result from your brain's need to constantly consolidate the long-term memories.

Not being limited to the rules of conventional logic, the mind can create infinite scenarios to help you find solutions that you wouldn't think conscious.

To increase the performance on some certain tasks, sleep is good, but dreaming while sleeping is better.