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Writer's pictureAli Astrid Moto

The Window of Tolerance: Understanding Trauma’s Impact on Regulation

Updated: 3 days ago



girl lying in the desert not moving
Stress Can Shut Us Down

When we talk about trauma and its effects on the body, one concept that often comes up is the Window of Tolerance. This term, coined by Dr. Dan Siegel, describes the optimal zone in which our nervous system can effectively handle stress and process emotions. In simple terms, it's the range where we feel safe, connected, and in control. But for those who have experienced trauma, staying within this window can be challenging.

What is the Window of Tolerance?

Think of the Window of Tolerance as a mental and emotional bandwidth that allows us to cope with life’s ups and downs. Within this window, we’re able to think clearly, respond rather than react, and remain present. When we’re inside the window, we feel "regulated"—our emotions are manageable, and our nervous system is balanced.

However, when we’re pushed outside this window due to stress or trauma triggers, our ability to self-regulate diminishes. There are two primary ways this happens:

  • Hyperarousal: This is the "fight or flight" response. When we’re hyperaroused, we may feel anxious, panicked, overwhelmed, or emotionally reactive. Our nervous system is on high alert, and we often feel unsafe.

  • Hypoarousal: On the flip side, hypoarousal is the "freeze" response. Here, we may feel numb, disconnected, or shut down. It’s as if the nervous system has gone into hibernation, and everything feels distant or foggy.

How Trauma Affects the Window of Tolerance

For those who have experienced trauma, the Window of Tolerance tends to be much narrower. The nervous system becomes more sensitive, making it harder to stay within that balanced zone. Minor stressors can push someone into hyperarousal or hypoarousal, causing emotional responses that feel disproportionate to the situation.

When we live with trauma, our bodies become wired for survival. We may constantly oscillate between states of anxiety or numbness, struggling to find a sense of calm. This is why it can be hard for trauma survivors to stay present or feel grounded—they are frequently outside their window, trying to navigate life from a place of dysregulation.

Expanding Your Window

The good news is that with the right support, the Window of Tolerance can expand. Somatic therapies, EMDR, and polyvagal-informed approaches are incredibly effective at helping the body learn to return to a state of regulation. Through these techniques, we work on helping the nervous system build resilience, slowly expanding that window so that we can handle more stress and emotional challenges without becoming dysregulated.

In my own practice, I guide clients through body-centered exercises that help them reconnect with their sense of safety and regulate their nervous system. The goal is not just to "survive" stress but to thrive, with an ever-widening capacity to feel calm, connected, and grounded.

Moving Forward

If trauma has narrowed your Window of Tolerance, you’re not alone. The nervous system is adaptable and can heal with time and the right tools. With support, you can expand that window, allowing for more balance, peace, and resilience in your everyday life.

Understanding your Window of Tolerance is the first step toward reclaiming your emotional and physical well-being. Let your body guide you as you move toward healing.



This overview of the Window of Tolerance offers a clear explanation of how trauma affects regulation and emotional stability. Would you like to dive deeper into any of the points? Check out my other short reads HERE

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