The Window of Tolerance includes three zones: optimal arousal (calm and balanced), hyperarousal (anxious and overwhelmed), and hypoarousal (numb or shut down). When you’re within your window, it’s easier to stay present, cope with stress, and make mindful eating decisions. When you’re outside of it, emotional regulation becomes harder—and habits like eating may shift. Understanding and widening your window can help support consistency, self-awareness, and health-focused routines.