Awakening in the Internal Worlds, otherwise known as lucid dreaming, astral projection, Astral travel, or out-of-body experiences, are perceptions of matter and energy that are beyond the reach of the physical senses. Anyone, anywhere, regardless of any distinctions or qualifications, may acquire their own personal knowledge of these living realities, if they are willing to make the effort.
Quite simply, astral projection refers to how our Consciousness departs from the physical body. Everytime our physical body sleep, the Consciousness departs from it, and experiences what we call "dreams." This is a form of astral projection, but in most cases the Consciousness is asleep, unaware that it is away from the physical body. While dreaming, we generally do not realize it. And when we return to the body, the memory of the dream is generally lost, or if recalled, appears hazy and unreal. This is all due to the weak state of our Consciousness.
It is possible to consciously project oneself out of the body. By means of constant training from moment to moment, the Consciousness can be strengthened to be be awake, aware, and sharp; thus, when it leaves the physical body, we remain aware of ourselves, and conscious of what transpires. From this state, one can investigate any phenomena in nature or oneself.