This isn't talking about 15-30 minutes of meditation. It's talking about 2+ week retreats. Having been on a couple 10-day retreats, I've experienced what I can

This isn't talking about 15-30 minutes of meditation. It's talking about 2+ week retreats. Having been on a couple 10-day retreats, I've experienced what I can only describe as significantly altered states of consciousness (after 6+ days of meditating 14-16 hours a day). Fortunately, I managed to make my way back into the world after they ended, but I can see how some people might be permanently altered.