Astral Projection
 

The OBE can be intentional or involuntary, as with near-death events when people report finding themselves floating near the ceiling of their hospital rooms, perhaps observing medical staff attempting to revive them. Trauma, illness, or water and food deprivation, as with Native American vision quests, can trigger OBEs. Lucid dream states are opportunities for intentional OBEs. For the purposes of this article, OBEs may be spontaneous, and astral projection a conscious choice, though some would argue otherwise.
Essentially, the OBE begins with an experience of leaving the body and consciously observing it from a detached perspective. With practice and lucidity, awareness can be directed to locations or activities like flight. Yes, flight. If you’ve had flying dreams — literal flying, no 747 required — or being in the sky, you’ve had OBEs. Some say that we have regular OBEs during sleep, often hovering a few inches over our physical bodies.
Neuroscientists are puzzled — while the experience is no longer dismissed out of hand by medical professionals, science holds the view that OBEs involve neurological or brain dysfunction. After his own experience, Dr. Raymond Moody MD became interested in near death OBEs, and for decades interviewed hundreds of experiencers and collected data, defining common qualities of OBEs. Moody identified nine common elements of a near-death OBE — some experiencing all, some, only two or three.

True. I am studying and researching astral projection for quite some time, but the only time I managed to astral project was involuntary, and quite scary to be honest.

Ravenmann

I am reading a book called Beyond UFOs: The Science of Consciousness & Contact with Non Human Intelligence and it speaks of many of the various modalities such as NDE can be explained by our understanding of the quantum world and how we are all interconnected.

Not to put words in the authors mouth but in simple terms when we move to "quantum" or "spiritual" realm are consciousness can supersede the finite physical structures that makes things like "flight" possible