Clinically Proven Over Half A Million Users. This breakthrough musical recording has been proven at the National Institutes of Health to help you relax deeply and quite your mind. You will feel the effects almost immediately as layers of tension away and you drift off to deep, restful sleep.The Ison MethodTM of deep relaxation through music was developed by David Ison during thirty years of research and exploration. It is utilized by some of the most prestigious medical in the country including Bethesda Naval Hospital, San Diego Children"s Hospital, the NIH, and The Scripps Center.