Early trauma can have a multitude of detrimental effects and consequences-one of which is dysregulated arousal. Traumatic experiences can disrupt the normal functioning of the autonomic nervous system (ANS) and cause arousal extremes through overactivation of the sympathetic or parasympathetic nervous system (SNS and PNS, respectively). Indeed, individuals with trauma histories can experience hyperarousal (fight or flight mode; SNS activation) or hypoarousal (freeze or numbing; PNS activation) in response to perceived threats (Corrigan et al., 2011; Ogden et al., 2006).