A lucid dream is a dream in which one is aware that one is dreaming. The term was coined by the Dutch psychiatrist and writer Frederik (Willem) van Eeden (1860–1932).^[1] In a lucid dream, the dreamer can actively participate in and manipulate imaginary experiences in the dream environment^[2]. Lucid dreams can seem real and vivid^[3].

A lucid dream can begin in one of two ways. A dream-initiated lucid dream (DILD) starts as a normal dream, and the dreamer eventually concludes it is a dream, while a wake-initiated lucid dream (WILD) occurs when the dreamer goes from a normal waking state directly into a dream state, with no apparent lapse in consciousness.

Lucid dreaming has been researched scientifically, and its existence is well established.^[4]

More about how to train your brain to lucid dream and how to maintain lucidity in the next few weeks :D

Coutesey of: http://www.wikipedia.org/