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Breath cover

Breath

James Nestor•2020

  1. Chappy's Book Notes•334 books

Breath

James Nestor•2020

Length
7h 55m•~334 pages
Read
Jun 8th - 11th '24
Physical HealthPersonal Growth
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The summary and key takeaways below are auto-generated. I ran an AI pass based strictly on my handwritten notes for this book. I haven't done my own pass over them yet.

I read a book once and take handwritten notes as I go, then leave them alone. Weeks or months later I come back and write the key points and summary from those notes.

The delay is on purpose. Having to rebuild a book out of my own notes does far more for my recall than a second read-through would.

This one has only gotten as far as the AI pass. I'll come back and redo the takeaways and summary myself soon!

Summary

Humans are the worst breathers in the animal kingdom—half are habitual mouth breathers, most over-breathe, and our evolutionary trade-off of bigger brains for tighter airways has left us with epidemic levels of sleep apnea, deviated septums, and craniofacial dystrophy. The fix is ancient and simple: breathe through the nose, breathe less, breathe slowly (5.5 breaths per minute hits resonance), and exhale longer. Modern diets that require less chewing have literally deformed our faces and airways. On the other end of the spectrum, deliberate practices like Wim Hof breathing, breath holds, and vagus nerve stimulation can reset the autonomic nervous system, reduce chronic stress, and even modulate fear responses at the level of chemoreception.

Key Takeaways

  • Mouth breathing literally reshapes the face and jaw over time
  • Nasal cycling links to brain hemisphere activation and genital arousal
  • Nose breathing improves circulation and keeps you in aerobic mode
  • Resonant breathing: 5.5 breaths per minute balances O2 and CO2
  • 85% of weight loss occurs through exhalation—CO2 levels determine heart rate
  • Over-breathing causes anxiety; hypo-ventilation training reverses it
  • Modern diet produces 10x more cavities and requires far less chewing
  • ~75% of people have deviated septums; 50% of the US has craniofacial dystrophy
  • Chewing triggers stem cell release that can partially rebuild facial structure
  • Wim Hof and holotropic breathwork activate the sympathetic system on demand
  • Vagus nerve stimulation fixes chronic stress-related poor blood flow
  • 13% of Americans use SSRIs—many could benefit from breath-hold practice instead
  • Amygdala (emotional) and chemoreception (CO2 levels) both regulate panic
  • Practicing breath holds builds learned control over panic responses
  • Hold your breath > take a deep breath for acute anxiety management

Notes

1: The first experiment

1: The worst breathers in animal kingdom

  • 1/2 of humans are habitual mouth breathers
  • Dis-evolution of human jaw, nasal cavity
  • Bigger brain → tighter airway

2: Mouth-breathing

  • Goal: always stay in aerobic mode
  • Literally reforms face, jaw
  • Numerous other benefits

2: The lost art

3: Nose

  • Nasal cycling:
  • Nose closely linked with genital arousal
  • Breathing controls how we think (L/R brain)
  • Nose breathing improves circulation

4: Exhale

  • Lung size is indicator of health
  • Breathe from bottom of lungs

5: Slow

  • Breathe to balance O2, CO2 levels
  • 85% of weight is lost via breathing
  • CO2 levels determine heart rate
  • Over-breathing → anxiety etc.
  • Resonant breathing: 5.5 breaths / min

6: Less

  • Goal: less breathing, longer exhales
  • Hypo-ventilation training:
  • Asthma: air gets trapped in the lungs

7: Chew

  • Modern diet → 10x more cavities
  • Cause: less chewing
  • ~3/4 people have deviated septum’s
  • Sleep apnea
  • Craniofacial dystrophy: head tilt to make up for poor airway; 50% of US population
  • Chewing → stem cell release

3: Breathing +

8: More, on occasion

  • Sympathetic, parasympathetic systems
  • Chronic stress → poor blood flow
  • Vegas nerve stimulation: fixes ↑
  • Wim Hof breathing:
  • Holotropic breath work:

9: Hold it

  • Two sources of fear: amygdala, chemoreception
  • Chemoreception: CO2 levels, regulates breathing
  • Constant multitasking → shallow breathing
  • 13% of people use SSRIs
  • Hold your breath > take a deep breath
  • Practicing ↑ → learned control over panic

10: Fast, slow, and not at all

  • Indian yogis + Prana (blood flow) control
  • Breathe slow, less, thru the nose
  • High O2 → electron excitability → health?
  • Traditional vs modern yoga

Epilogue

  • X

Breathing methods

  • Alternate nostril breathing:
  • Breathing coordination:
  • Buteyko breathing techniques:
  • The conscious breathing anchor:
  • Decongest the nose:
  • Yogic breathing:
  • Box breathing:
  • Conscious breathing CO2 training:
  • 4-7-8 breathing: