During the night when we sleep we often dream of realms other than the physical world we live in. Sometimes these places are the same as our ordinary physical lives sometimes they are out of the ordinary. The process of sleep involves the astral body detaching or rather separating from the physical body. During this process we experience REM sleep, where we dream on another dimension known as the astral plane.
The astral world is a definite region of the universe, surrounding and interpenetrating the physical, but imperceptible to our ordinary observation because it is composed of a different order of matter.
~ Annie Besant, Man and his Bodies
Dreams have a meaning and are often symbolic in nature. When a person dreams of themselves going about their daily business as if it were the physical world they are said to be sleeping and unaware on any level that they have entered into a different dimension. This is symbolic of a persons awareness and level of waking in the physical world. When a person has a dream that is quite out of the ordinary it can be that elements of the subconscious have entered into the psyche or that they have traveled to a specific place on the astral plane and are experiencing this place in a dream.
Astral projection is the process of consciously entering the astral plane with an awareness of the process of splitting form the physical body.
There are many dream symbols that have an inner meaning that may discovered on the astral plane and taught by awakened beings also known as angels awhile a person is dreaming.
Lucid dreaming is an event in which a dreamer realizes they are dreaming and enters into a heightened state of awareness of the dream realm. Once someone realizes they are dreaming they can then take control of their actions in that dream as if it were the physical realm, though as the laws are different on the astral plane, the dreamer is able to do things not possible on the physical plane such as fly and walk through physical objects. This can also be done once one has astral projected.
Sleep paralysis occurs most often at the moment the body falls asleep or at the moment when the body has woken up. Often these experiences may be du to demonic influence where to individual under attack is neither fully inside the physical body or fully inside the astral body and such experiences a type of paralysis where they cannot move.
Night terrors are partial arousals from sleep in which a person may shout, thrash about, kick, or scream as if in an intense panic. People experiencing night terrors cannot be comforted or woken and often will have no memory of the events later. Esoterically it is due to the inner negativity of an individual that they are drawn to such hellish regions of the dimensions to experience these night terrors.
Nightmares are dreams which take place in inferior realms of the Astral Plane also known as the infra-dimensions. A persons negativity drags them down into these hellish regions where they may find themselves being chased or attacked by demonic entities.