Stress Reduction Through Breathing: Four Techniques

By The Lungora Team · September 2026

Breathing is the only autonomic function you can consciously control. This gives you a direct lever to shift from stress response to relaxation response — anywhere, anytime, for free.

Box breathing (4-4-4-4)

Inhale 4 counts, hold 4 counts, exhale 4 counts, hold 4 counts. Used by Navy SEALs for calm under pressure. Effective within 3 to 5 cycles.

Physiological sigh (double inhale + long exhale)

Two quick inhales through the nose followed by a long slow exhale through the mouth. Research from Stanford shows this is the fastest single-breath technique for reducing stress.

4-7-8 breathing

Inhale 4 counts, hold 7 counts, exhale 8 counts. The extended exhale maximally activates the parasympathetic (calming) nervous system.

Coherent breathing (5.5 breaths per minute)

Inhale 5.5 seconds, exhale 5.5 seconds. This rate maximizes heart rate variability, a biomarker of stress resilience.