Understanding and Working with the Window of Tolerance

Author: Lori Gill, RP, MACP, CTIC
Founder and Clinical Director, Lori Gill Psychotherapy
http://www.holisticwellnessforhealth.com/ | @lorigilltherapy

As infants, healthy attachment interactions with attuned, consistently available, nurturing caregivers lay the foundation for optimal brain and nervous system development. Over time, co-regulation (assisted regulation) allows us to learn how to effectively self-regulate.

The “Window of Tolerance,” a term coined by Dr. Dan Siegel, is now commonly used to understand and describe normal brain/body reactions, especially following adversity. The concept suggests that we have an optimal arousal level—our window—where we can experience the natural ebb and flow of human emotions. We might feel hurt, anxiety, pain, or anger that brings us close to the edges of the window, but generally, we can utilize strategies to keep ourselves within it. Similarly, we may feel exhausted or shut down, but usually shift out of these states over time.

Diagram:
The window of tolerance is visually represented as a band where the nervous system can experience activation followed by settling, without tipping into dysregulation.

Trauma, Attachment, and the Shrinking Window

When we experience adversity through trauma and unmet attachment needs, our nervous system is disrupted. Senses are heightened, reactions are intensified, and strategies for regulation become less accessible. Adverse experiences shrink our window of tolerance, leaving us less able to ebb and flow, and more likely to become overwhelmed.

Learning to track and shift affect is a powerful tool for promoting regulation and integration throughout the brain, body, and mind.

Arousal States: Calm, Hyperarousal, and Hypoarousal

• Calm arousal: The ideal state. Most of the day is spent fluctuating within various levels of calm arousal.
• Hyperarousal: Excessive activation/energy (anxiety, panic, fear, hypervigilance, emotional flooding). The system is “stuck on,” making it hard to sleep, eat, or digest food, and difficult to manage emotions. At its most intense, this can result in dissociative rage or hostility.
• Hypoarousal: Occurs when hyperarousal surpasses what the brain/body can tolerate, leading to shutdown or dissociation. The system is “stuck off,” characterized by exhaustion, depression, numbness, disconnection, and emotional deadening. This may also affect sleep and appetite.

Humans can only stay in one state for so long before the brain and body shift. Too much pain, anxiety, or fear leads to numbing; too much shutdown leads to seeking stimulation (sometimes through risky behaviors) to feel alive again.

Self-Regulation and Coping

Many people know they “don’t feel right,” but without early regulation experiences, may not know how to self-regulate. Instead, they often attempt to regulate in any way they can—sometimes unknowingly. For example, someone with excessive fear may gravitate toward depressants to calm their nervous system, while someone feeling deadened may seek stimulants to feel alive.

Understanding the function of these responses is critical for finding effective, non-harmful strategies that don’t result in shame or guilt. False refuges provide the illusion of help but ultimately perpetuate the problem. True refuge involves strategies that genuinely shift arousal, build competencies, and promote self-care.

Supporting Regulation in Children, Youth, and Adults

Parents, loved ones, and professionals can help by identifying and labelling (“It looks like you are feeling overwhelmed, why don’t we take a break?”). Dan Siegel refers to this as “name it to tame it.” Naming emotions provides understanding, validation, and grounding.

Encourage mindful noticing—how do you feel, how does your body feel, what do you need to feel right again? The goal is to broaden the window of tolerance, increasing the capacity to hold emotional experiences—even intense ones—without dysregulating.

Sample Interventions to Shift Arousal Levels

Activities to decrease arousal:

• Diaphragmatic breathing (deep and slow tummy breathing)
• Drinking from a straw
• Throwing a therapy/yoga ball at a wall
• Jumping on a trampoline or mini trampoline
• Weighted blanket
• Warm or cool water (temperature changes)
• Shaking or stomping out excess energy
• Therapy/yoga ball rolling on the back
• Heavy work (lifting, pulling, pushups, wheelbarrow races, crab walk, leapfrog, etc.)
• Soothing music
• Comforting food (hot chocolate, chewy/smooth foods)

Activities to increase arousal:

• Anything that stimulates the senses
• Smelling essential oils
• Chewy/crunchy food
• Sensory shaker/ball pit
• Movement, jumping, rocking chair
• Weighted blanket
• Finger painting
• Water play with a straw
• Dancing and music

Monitor and adapt activities based on individual feedback and needs.

The Importance of Safety, Control, and Attuned Presence

Trauma is marked by a loss of control, so establishing safety and empowerment is essential. Warm touch, gentle voice, soft facial expression, and attuned posture communicate safety and help coregulate the individual. Responding at a sensory (right-brain) level, validating emotions, and offering choices supports regulation.

Avoid behavioral “if-then” approaches during dysregulation—these are higher-order responses and can escalate distress.

Integration and Building Competencies

Learning to shift arousal levels for yourself, loved ones, or clients is a powerful tool for promoting integration, emotional comfort, and relationship skills. If you want to learn more about trauma-informed care or trauma-specific treatment, see our certification and training section for upcoming events.

Wishing you and yours a gentle rest of your day!

In gratitude, Lori

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