Aka the 'involuntary' nervous system, responsible for control of heart beat, sweating, salivation etc. In humans it's possible to bring parts of it under conscious control... with training! But under normal circumstances it IS self-regulating <img src="smile.gif" border="0">
Erm, sorry, was this not a serious question?!
Editted to make sense <img src="redface.gif" border="0">
[ 16 January 2002: Message edited by: AerBabe ]</p>