Free Online Box Breathing Timer (4-4-4-4 Technique)

Inhale • Hold • Exhale • Hold•Navy SEAL Relaxation Protocol•Vagal Nerve Activation•Instant Stress Relief

Regulate Your Nervous System in Four Minutes

Box breathing (square breathing) is a proven physiological technique used by Navy SEALs, athletes, and first responders to eliminate panic and regain calm focus under pressure.

Follow the circular visual guide as it transitions smoothly through equal four-second intervals of breathing and holding.

How to Use the Box Breathing Timer

Inhale slowly through your nose for 4 seconds as the arc expands.

Hold your breath gently for 4 seconds at the top.

Exhale smoothly through your mouth for 4 seconds.

Hold lungs empty for 4 seconds before the next cycle begins.

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Frequently Asked Questions

How many minutes of box breathing should I do?

Just two to four minutes (4 to 8 full cycles) is enough to trigger the parasympathetic rest-and-digest response.

Ready to Start Your Box Breathing Timer?

Scroll up and press Start to begin your visual countdown immediately.