Daily movement
Tactical Breathing
Square breathing, used by Navy SEALs, to regulate the autonomic nervous system and achieve a state of calm focus under pressure.
Square breathing, used by Navy SEALs, to regulate the autonomic nervous system and achieve a state of calm focus under pressure.
Modern military and performance psychology. · Known broadly as "Box Breathing," this specific application is popularized within the US Navy SEALs and notably taught by figures like Mark Divine, founder of SEALfit. · Acute stress, anxiety, heightened sympathetic nervous system activation, need for mental clarity and emotional regulation. · Perform 5-10 rounds when experiencing acute stress or preemptively before a high-pressure situation. Can be practiced for 5-10 minutes daily for general nervous system regulation.
Why it works
Tactical Breathing intentionally manipulates breath duration to stimulate the vagus nerve, which in turn activates the parasympathetic nervous system. The equal timing of inhale, hold, exhale, and hold creates a rhythmic, predictable pattern that down-regulates fight-or-flight responses, improves heart rate variability, and promotes cerebral oxygenation. This structured breathing pattern provides a point of focus, diverting attention from stressors and fostering a sense of control over physiological responses. The slight increase in CO2 during breath holds can also have a calming effect and enhance oxygen delivery to tissues.
How to practice
Assumption of Posture: Find a comfortable seated or reclined position. Ensure the spine is erect but not rigid, and the shoulders are relaxed.
Oral Cavity: The tongue rests gently on the roof of the mouth, just behind the front teeth. Lips are gently closed.
Initiation: Begin by exhaling completely to empty the lungs of residual air.
Inhale (4 seconds): Inhale slowly and deeply through the nose for a count of four. The breath should initiate in the diaphragm, expanding the abdomen, then the ribs, and finally the chest. Visualize the inhale tracing the first side of a square.
Hold (4 seconds): Hold the breath at the top of the inhale for a count of four. Avoid tension in the throat or chest. Visualize this as the top side of the square.
Exhale (4 seconds): Exhale slowly and completely through the nose for a count of four. Allow the abdomen to gently contract inward. Visualize this as the third side of the square.
Hold (4 seconds): Hold the breath at the end of the exhale for a count of four, with the lungs empty. Avoid straining. Visualize this as the final, bottom side of the square.
Repeat: Continue this 4-4-4-4 cycle.
Assumption of Posture: Find a comfortable seated or reclined position. Ensure the spine is erect but not rigid, and the shoulders are relaxed.
Oral Cavity: The tongue rests gently on the roof of the mouth, just behind the front teeth. Lips are gently closed.
Initiation: Begin by exhaling completely to empty the lungs of residual air.
Inhale (4 seconds): Inhale slowly and deeply through the nose for a count of four. The breath should initiate in the diaphragm, expanding the abdomen, then the ribs, and finally the chest. Visualize the inhale tracing the first side of a square.
Hold (4 seconds): Hold the breath at the top of the inhale for a count of four. Avoid tension in the throat or chest. Visualize this as the top side of the square.
Exhale (4 seconds): Exhale slowly and completely through the nose for a count of four. Allow the abdomen to gently contract inward. Visualize this as the third side of the square.
Hold (4 seconds): Hold the breath at the end of the exhale for a count of four, with the lungs empty. Avoid straining. Visualize this as the final, bottom side of the square.
Repeat: Continue this 4-4-4-4 cycle.