Abstract: This talk discusses some of the structures of calm and arousal - whether we are chilled out or losing it. The material is cooked down to four sections, that (1), note some structures regulating calm and arousal (2), list some brain and body correlates (3) consider the definition of the self that stresses or calms. (4) discuss bottom-up and top-down regulators under some voluntary control that can alter the balance between calm and arousal.