Understanding the Window of Tolerance
The Window of Tolerance, a concept introduced by Dr. Dan Siegel, describes the optimal range of arousal in which we feel safe, regulated, and able to cope with everyday stress. When we are within this “window,” our nervous system is balanced — we can think clearly, connect with others, and respond flexibly to challenges.
When we move above the window (hyperarousal), the body may activate responses like fight or flight, leading to anxiety, agitation, or restlessness. When we slip below the window (hypoarousal), we may experience freeze or fawn patterns — feeling numb, disconnected, or overly accommodating to others.
Therapeutic support, mindfulness, grounding techniques, and trauma-informed practices can gently help expand the Window of Tolerance. Over time, this creates more room to manage stress, build resilience, and navigate life’s ups and downs with greater ease.
References
Mindfulness and the Window of Tolernace: mast.stmichaelshospital.com
Siegel, D. (1999). The developing mind: How relationships and the brain interact to shape who we are. New York: Gulliford Press