“This guest blog was provided by Derek Sienko, M.A., in Military Psychology, BSW., RSW, Chaplain, RTWDM, & CVRP Chief Executive Officer Diversified Rehabilitation Group (PTSDRecovery.ca), an approved service provider working with Members of the RCMP and other first responder services across Canada. We thank them for sharing their expertise on the critically important issue of police officer mental health.” 

For police officers, the job demands split-second decisions, high-stakes encounters, and repeated exposure to human suffering and conflict. These stressors can push the mind and body outside what psychologists call the “Window of Tolerance” the optimal zone of arousal where we think clearly, feel grounded, and respond effectively. 

When officers operate outside this window either in hyperarousal (fight, flight, panic, aggression) or hypoarousal (numbness, shutdown, disconnection); it can impact judgment, escalate situations, and take a toll on long-term mental health. 

Understanding and expanding your window of tolerance is essential for safe, compassionate policing and personal psychological wellbeing.  

What is the Window of Tolerance? 

The Window of Tolerance refers to the emotional bandwidth in which we can process information, manage stress, and engage in effective decision-making. Staying within this zone allows officers to remain composed during chaos and responsive rather than reactive. 

Why It Matters for Officers 

  • Reduces risk of overreacting or freezing in the field 
  • Improves decision -making under stress
  • Supports trauma recovery and emotional regulation
  • Builds resilience and reduces burnout
  • Enhances relationships on and off duty

Practical Tools to Stay Within the Window

Here are field-tested strategies officers can use before, during, or after a high-stress encounter: 

Tactical Grounding 
Use your senses to anchor yourself in the moment. Try the 5-4-3-2-1 technique: 

  • 5 things you see 
  • 4 things you feel
  • 3 things you hear 
  • 2 things you smell 
  • 1 thing you taste 

Check-Ins Before and after shift   
Take 1 minute to ask:  
“Where am I emotionally and physically, on the scale of calm to stressed?”  
Noticing early signs helps you course-correct sooner. 

Movement & Muscle Reset 
After tense calls, release built-up tension by stretching, walking, or tensing and relaxing major muscle groups. 

Box Breathing (4-4-4-4) 
Breathe in for 4 seconds, hold for 4, out for 4, hold for 4. Repeat for 3–5 cycles. This resets the nervous system. 

Peer Debriefs & Support 
Create space with trusted peers to talk about calls and reactions. Normalizing these conversations builds emotional awareness and resilience. 

Final Thoughts 
Mastering your Window of Tolerance isn’t about being emotionless; it’s about being emotionally equipped. With practice, officers can expand their window of tolerance, improving safety, decision-making, and personal well-being on and off the job.