I have blacked out from smoking to much. I get this feeling come over me and I fade out. This has happened to me several times where it feels like I zone out, I get really warm, my eyes roll back in my head and thank God I had someone there to revive me. I used to smoke all the time, then over the years I slowed down. It happens to me if the stuff is really good or I just have too much for my tolerance level. I been told it might have something to do with my sugar and or my tolerance level. I like to find answers to this myself, because friends and family have been scared when this happens to me. I feel the only way to keep this from happening to me is not to take part.Last time this happened it only took three joints, first one, then I ate, then we had two back to back of some medicinal grade stuff and passed out to wake up to frightened friends and being told I just blacked out and like I was choking. Couple times I woke up with puke on me. If anyone has any similar experiences they like to share, reply to my answer.