Back in the mid-90s, I became very interested in the work of Robert Monroe and the Monroe Institute. I attended a week-long workshop at the Institute meant to be a practical introduction to out-of-body experiences using their Hemi-Sync audio technology. I achieved some very deep and productive mental states, but not an OBE.

About a month later I did have one that I was able to confirm via external witness who was able to confirm that the experience I had corresponded to actual circumstances and events that took place at the same time. I've tried to reproduce it, and have had some vivid experiences, but unfortunately that was the only experience I was able to objectively confirm.

But the entire saga sparked my interest in altered states, which started with enthogens and audio manipulation, and ultimately led to meditation.