Navy SEAL in training
Mindfulness July 22, 2023

Box Breathing: A Navy SEAL's Secret to Staying Calm Under Pressure

Master this military-tested technique to control stress responses in minutes.

Mark Reynolds

Mark Reynolds

Former Navy SEAL, Performance Coach

Why SEALs Use This Technique

Developed for high-stakes combat situations, box breathing:

  • Activates the parasympathetic nervous system
  • Lowers heart rate by 10-20 BPM within 90 seconds
  • Reduces cortisol levels by 15% per 2021 DOD study

Combat Proven:

SEAL teams report 37% better decision accuracy under fire when using this pre-mission.

The 4-Step Box Method

INHALE
4 sec
HOLD
4 sec
EXHALE
4 sec
HOLD
4 sec
  1. Inhale through nose for 4 seconds (expand diaphragm)
  2. Hold breath for 4 seconds (keep relaxed)
  3. Exhale through mouth for 4 seconds (complete release)
  4. Hold empty for 4 seconds (prepare cycle)

When to Use It

Stressful Moments

  • Before important meetings
  • During conflicts

Daily Practice

  • Morning routine
  • Pre-sleep wind down

Performance

  • Pre-workout
  • Public speaking

Common Mistakes

Mistake Fix
Shallow chest breathing Place hand on belly to feel expansion
Forcing breath holds Reduce to 3 seconds if uncomfortable

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