Thank you for your reply, very interesting. I can do reverse breathing he talks about and find it very easy and natural and powerful, but i still think that hyperventalition is bad, and breath holding is good, simply because its scientifcally proven to hyperoxygenate the body (co2 causes o2 to be released from blood cells into tissues, thereby breath holding INCREASES oxygen up to the point of 75% blood o2 saturation when the effects reverse.)
