This worksheet explains the concept of the “window of tolerance,” which is the optimal zone of arousal to function in a healthy manner. People who have experienced trauma may have a relatively narrow window of tolerance. On either side of the “window” are hyperarousal, a state of activation and energy, and hypoarousal, a slow down or even a shutdown state of response. This worksheet gives people suggestions on how to expand and stay within their window of tolerance. (1022, PTSD, trauma, emotional regulation)