What is the window of tolerance?

The window of tolerance, coined by Daniel Siegel, is the range of nervous-system arousal in which you can think clearly, feel emotions without being overwhelmed, and stay connected to others. Above the window is hyperarousal (anxiety, anger, panic). Below is hypoarousal (numb, shut down, dissociated).

How do I know if I'm outside my window of tolerance?

Signs of being above your window: racing thoughts, tight chest, urge to fight or flee, feeling overwhelmed. Signs of being below: numbness, heaviness, brain fog, hopelessness, wanting to disappear or sleep. In your window you feel present, able to think, and able to feel without being flooded.

How do you widen your window of tolerance?

The window widens with regulation skills (long exhale, orienting, rhythmic movement, grounding), safe co-regulating relationships, sleep, and time. It narrows with chronic stress, trauma reminders, poor sleep, and isolation. Consistency matters more than any single technique.

Is the window of tolerance the same as polyvagal theory?

They overlap but aren't identical. Polyvagal (Stephen Porges) maps three autonomic states: ventral vagal (safe/social), sympathetic (mobilized), and dorsal vagal (shutdown). The window of tolerance is a clinical model — being in your window roughly maps to ventral vagal; above corresponds to sympathetic, below to dorsal vagal.

For-clients library

For clients · interactive · Nervous system

Window of Tolerance

The 'window' is where you can think and feel at the same time. Above it: too much. Below it: too little. The goal is to know where you are, then nudge back in.

4 minute read Plain-language guide

Practice 01

Where are you right now? Drag the dot.

Drag up (activated) or down (shut down). The middle band is your window.

Move the dot to where you are right now. Signs and moves will appear here.

Why this matters

You can't think your way out of a nervous system that's above or below the window. The body has to come back first. These moves work because they speak the body's language — temperature, pressure, breath, movement.

Where it comes from

The window of tolerance is a concept from Dan Siegel, used widely in trauma-informed therapy. Your window can be narrow today and wider next month — it stretches with practice.

Good to know

The window of tolerance is a useful clinical metaphor, not a medical test. Your workable range changes with sleep, stress, pain, hunger, hormones, connection, and context.

If this does not help

Do not aim straight for calm. If highly activated, discharge some energy first; if shut down, begin with light, sound, posture, or small movement.

Talk about this in therapy

How do I know I am moving above or below my workable range?
Which skills fit each direction?
What regularly narrows my window?

Safety

Body-focused practices can feel activating, especially after trauma or during dissociation. Keep your eyes open, shorten the exercise, and orient to the room. Stop if symptoms intensify. New, severe, or unexplained physical symptoms need medical assessment.

Sources and limits+

Reviewed for clarity and updated October 2026. This page offers general education and cannot assess your individual situation.

National Center for PTSD: coping and grounding
NICE guidance on PTSD
Siegel: window of tolerance clinical model

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