It does happen. When I am breathing I notice my mind or forehead is relaxed I ap straight away or my inner self decides to go out of my body somewhere. I either go slowly or quickly. If it does not happen I relax myself completely and my inner self comes out. I might do an ap technique and I am there or doing an activity. Other times when I am breathing in and out, I get vibrations and I know I can get out of my body.