PEAK PERFORMANCEDays to result

Physiological Sigh

Breathe to calm

Problem it solves

Suboptimal health habits undermine energy, performance, and longevity; this framework provides specific evidence-based practices to build a sustainable physical and mental health foundation.

Best for

Individuals experiencing stress and anxiety

Not ideal for

Those with underlying respiratory issues

Overview

Why this framework exists

The Physiological Sigh is a breathing technique that can help calm the body and mind by activating the parasympathetic nervous system. It involves taking a double inhale followed by a long exhale, which can help slow down the heart rate and reduce stress.

Core principles

3 total
  1. The parasympathetic nervous system can be activated through breathing techniques.
  2. The diaphragm and lungs play a crucial role in regulating heart rate and stress response.
  3. Voluntary control of breathing can help calm the body and mind.

Steps

3 steps
  1. Inhale Deeply
    Take a deep breath in through the nose, filling the lungs completely.
    Pro tipMake sure to breathe into the diaphragm, not just the chest.
    WarningAvoid breathing too quickly or shallowly.
  2. Double Inhale
    Take a second, deeper breath in, filling the lungs even more.
    Pro tipTry to inhale for a count of 4-5 seconds.
    WarningDon't overexert yourself, especially if you have any underlying health conditions.
  3. Long Exhale
    Slowly exhale through the mouth, emptying the lungs completely.
    Pro tipTry to exhale for a count of 6-8 seconds.
    WarningAvoid holding your breath or exhaling too quickly.

Checklist

Saved in your browser

Examples

1 cases
Reducing Stress

A person experiencing stress and anxiety uses the Physiological Sigh to calm their body and mind.

OutcomeThe person feels more relaxed and centered, with reduced stress and anxiety.

Common mistakes

2 traps
Breathing Too Quickly
Breathing too quickly can actually increase stress and anxiety, rather than reducing it.
Not Using Diaphragm
Failing to engage the diaphragm can reduce the effectiveness of the Physiological Sigh.

Origin story

How this framework came to be

The Physiological Sigh is based on the natural response of the body to stress, where the diaphragm and lungs work together to regulate breathing and heart rate.

Source

Traced to primary
Source · PODCAST
Tools for Managing Stress & Anxiety | Huberman Lab Essentials
Andrew Huberman · 2025
Open source →