How to Optimize Your Brain-Body Function & Health | Huberman Lab Podcast #30

Breathing Mechanics

The mechanics of breathing involve intricate physiological processes that influence our brain's decision-making. Andrew Huberman explains the Hering Breuer Reflex, which is triggered by baroreceptors sensing lung pressure. This reflex affects our urge to breathe, demonstrating how mechanical pressure impacts our brain's responses 1.

The Hering Breuer reflex is a very powerful one. This is why you take a big deep breath before you go under water.

--- Andrew Huberman

Huberman also describes a breathing technique that alters the chemistry of our bloodstream, enhancing alertness by increasing adrenaline levels. This involves deep inhalations followed by passive exhalations, repeated multiple times to change the internal landscape 2.

   

Breath Control

Breath control techniques can significantly impact heart rate and stress levels. Huberman highlights the physiological sigh, a method involving two inhales followed by a long exhale, which helps calm the mind by slowing the heart rate 3. This technique leverages the mechanical relationship between the diaphragm, lungs, brain, and heart to modulate stress responses.

The fastest way to calm down is to emphasize exhales.

--- Andrew Huberman

Additionally, he explains how inhaling increases heart rate by expanding the lungs and diaphragm, while exhaling slows it down by reducing the heart's volume. This automatic process illustrates the brain's role in regulating organ function through mechanical interoception 4 5.