The practice of phase states of the brain is the most fashionable and promising hobby of our time. Unlike the past, now the concepts of “out-of-body travel” and “astral” have lost all their mystical aura, and their real basis has been thoroughly studied from the most pragmatic positions. Now this is available to everyone, regardless of their views on the world order. Now we know how easy it is to master and how it can really be applied. This textbook gives every person what he could only dream of before - a parallel reality, the opportunity to exist in two worlds. This book is for pragmatists who are not used to believing in something and read empty theories. Only practice and nothing but real practice.