Was doing a meditation the other morning; IDL on the floor at the foot of the bed. The usual hand and arm tingling, then the feet got into the act. An oh so subtle heat blanket(?) enveloped me and I started to hear binaural beats — two tones – one in one ear and a slightly different one in another creating slight wave pattern. Then I felt as if my physical body was getting weighed down (even though I was simply lying in bed), but something of me seemed to be trying to detach. I suddenly heard some kind of metallic sounds and something happened but extremely quickly — almost like I transformed or went somewhere, then came back to the previous state.