Sometimes in the practice of deep relaxation, meditation or sensory deprivation, our being enters into a state akin to sleep, yet we maintain personal waking awareness. This is like a journey into a deeply interior world of mind and body where our senses no longer function in their waking manner; where the brain works in a different way, and where awareness is introverted in a degree we do not usually experience. It can be a frightening world simply because we are not accustomed to it.
