Bryan Johnson· Author
well yesterday there was a study done in 1998 by some famous neurosurgeons siwani and Rhoden and they were looking into why so many of their patients were having hemorrhages bleeding in certain cranial certain positions and especially a position where they were opening up the skull from the back like this with the neck extended a lot of patients were having hemorrhages and they did a caliber study were very they opened various categories and what they found and what they postulated was that when you bend the neck back like this which is a common posture for a lot of people they kind of sit like this and and that neck back you blocked the jugular veins and that was their theory on that