To me, this is just extending consciousness to more of the body; not beyond it. I think that's what the parent probably meant, as well. Wim Hof breathing demonstrates our autonomic nervous system can be made a little less autonomic - any claims beyond that seem unrelated (and unscientific).
> any claims beyond that seem unrelated (and unscientific).
Maybe, but science hasn't even been able to properly define consciousness. So following your logic, how can there be anything strictly scientific relating to consciousness?
