Box Breathing
The Navy SEAL technique for staying calm under pressure, used by special forces worldwide.
What is Box Breathing?
Box breathing, also called "tactical breathing," is a simple 4-step technique used by U.S. Navy SEALs to stay calm in high-stress combat situations. Each phase — inhale, hold, exhale, hold — lasts exactly 4 seconds, creating a perfect "box" rhythm.
Unlike 4-7-8 breathing which focuses on the exhale, box breathing creates symmetry in the breath cycle, which research shows helps regulate the autonomic nervous system and improve focus under pressure.
The Four Steps
EXHALE completely through your mouth first (reset)
INHALE slowly through your nose for 4 seconds
HOLD your breath for 4 seconds
EXHALE completely through your mouth for 4 seconds
HOLD empty for 4 seconds before next inhale
One box = 16 seconds (4+4+4+4). Repeat 4-5 boxes per session.
When Navy SEALs Use It
Before a high-stakes operation
During tactical shooting
Before exams or interviews
During difficult conversations
Why It Works
The equal 4-second intervals prevent rushing and force you into a deliberate, controlled rhythm. The post-exhale hold is particularly powerful — it mimics the pause after a natural sigh, which is your body's way of resetting stress levels.