https://github.com/davepinch/pinchy.cc/blob/master/content/topics/people/j/john-m-pinch/obituary/4-3.md
By placing the body in a sleeplike state, the Gateway tapes achieve the same goal as meditation in that it places the body in such a profoundly relaxed state that the bifurcation echo slowly fades away as the heart lessens the force and frequency with which it pushes blood into the aorta.