There is absolutely no scientific evidence to support anyone's assertion that sitting zazen or spinning on ur head for that matter balances the ANS. The ANS dose a more than adequate job staying in balance all by itself. Thats why it is called the AUTO-NOMIC nervous system. I've been watching people discuss this issue on the blog-o-sphere for a couple months now without saying anything.
Trust me on this.......I'm a doctor.(they make you study shit like this just on the off chance that someday you might stumble across some incredibly stupid blog site like HC and you are forced by the sheer will of the truth to make an attempt at correcting some terribly confused and profoundly disturbed persons mind ..... like brad.) (Ta Da )
Jundo, thanks for allowing me to speak my peace on this issue without feeling like I am insulting you or your teacher.
But......de facts are de facts