Oh that reminds me of some near the boarder(SP) experiences ive had to. To lie in an comfertable position, which can get very uncomfertable after a while , and then imagine walking out of the body or something. I focused on one step at the time, that brought my attention away from my physical body, while i walked sideways into the wall. I didnt feel the wall or anything but i felt apart from the body, before i thought of the body and could again feel my limbs. I had really forgotten that. Il try something like that tonight again!