I'm making pretty good progress but have yet to experience an intentional OBE. I've had rippling feelings in my stomach and chest areas that I assume are a beginning vibrational state but I've also had what used to be called "rushes" back in the 60s-early 70s when describing chemically induced symptoms. These "rushes", for want of a better word, feel sort of like chills or minor electric stimulation all up and down my body during some of my trance experiences. Are these vibrational related?