04/08/2026
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A double-inhale through the nose (filling the lungs completely) followed by a long, slow exhale through the mouth. This isn't just an emotional expression it's a fundamental physiological reflex to reinflate lung alveoli and rapidly reduce levels of carbon dioxide in the blood, signaling immediate safety to the brain. Do 3 now.
Comment "sigh" to learn the full science from Stanford neuroscientists.
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