The biopsychosocial model of challenge and threat posits that resource and demand appraisals interact in situations of acute stress to determine affective responses, and concomitant physiological responses, motivation, and decisions/behaviors. Regulatory approaches that alter appraisals to regulate challenge and threat affective states have the potential to facilitate coping. This reply clarifies the conceptualization of one such regulatory approach, arousal reappraisal, and suggests avenues for future research. However, it is important to note that arousal reappraisal is not a “silver bullet” for (...) improving stress outcomes, nor should this strategy be expected to positively impact all individuals. More work is needed to better elucidate how psychological and biological stress processes interact to shape health. (shrink)