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Glossary termPhysiology

Sighing

A single deep breath (roughly twice tidal volume) that reinflates collapsed alveoli. Occurs spontaneously every few minutes.

The physiological sigh is a deliberate use of the same mechanism, done in rapid double-inhale form to accelerate the reset.

See also

Learn · Techniques
The Physiological Sigh: The Fastest Stress Reset
A double-inhale through the nose followed by a long exhale through the mouth. The fastest downshift the body has, and the reset humans and animals use without being taught.