Looks crazy
https://www.youtube.com/watch?v=wsh2TuVEytk
more vids:
https://www.youtube.com/watch?v=qCzG9QsM-Pw
https://www.youtube.com/watch?v=YVILRQ4gHBka
https://www.youtube.com/watch?v=E5v_D3WNg70
https://www.youtube.com/watch?v=OQyIgfdrzVI
Yikes! :-o Interesting though, when they talk about changing the rate of breathing/getting more or less oxygen being the key to altered states. I don't know much about meditation -I just do it enough to project- and I never really thought about that. I think I hold my breath or just breath less when I'm in the trance getting ready to project. I wonder if it has something to do with success?