Podcast Summary — The Tim Ferriss Show #829

Guest: James Nestor
Title: Breathing Protocols to Reboot Your Health, Fix Your Sleep, and Boost Performance
Date: September 30, 2025

Overview

In this episode, Tim Ferriss welcomes James Nestor, acclaimed science journalist and bestselling author of Breath: The New Science of a Lost Art. The conversation dives deep into the power of breath—not just as a life function, but as a lever for radical health transformation. Nestor shares scientific findings, personal experiments, protocols for improved sleep and performance, and lively stories from his research. Key themes include the history and techniques of breathwork, why nasal breathing is fundamental, practical interventions for sleep problems (especially in kids), air quality insights for travelers, the intersection of breathing with sports, and the realities of writing and publishing bestsellers.

Main Discussion Points & Insights

The Roots and Legacy of Transformative Breathwork

• Maurice Dubarre & Ancient Breath Practices

  • Maurice Dubarre: A breathwork pioneer from the French Alps who lived to 93, with a backstory involving recovery from severe respiratory illness using yoga-inspired breathing (04:02–05:01).

    "He gained this almost superhuman strength by adopting these breathing practices. That was in the 1950s. So that's how far ahead of the curve this guy was." —James Nestor [04:07]

  • Tummo: Traditional Himalayan breathwork for generating internal heat—contrasted with "commercial" versions like the Wim Hof Method (05:43–07:00).

• Experimenting with ‘Tummo Lite’

  • Nestor personally uses modern tummo iterations for cold exposure:

    "If you are cold, you can do this and you can jack your body temperature very, very quickly." —James Nestor [07:14]

  • Difference between slow, traditional tummo and "hyperventilation" styles (Wim Hof). The latter’s more accessible, but both cause profound physiological shifts.

Personal Breathwork Transformation & First Encounters

• Nestor’s Motivation:
  • Chronic respiratory issues despite optimal diet, exercise, and sleep—until a doctor friend suggested breathwork (10:07–11:44).

    “I did it, and I haven’t had one of those issues since.” —James Nestor [11:19]

• The First Life-Changing Technique:
  • Sudarshan Kriya, learned via The Art of Living, led to unexpectedly powerful physiological reactions:

    “I sweated through everything... my body had such a reaction... it was like a switch was just flipped on.” —James Nestor [13:11]

Sleep, Kids’ Health, and Mouth Breathing

• Sleep Disordered Breathing & ADHD

  • Huge overlap between children with sleep-disordered breathing and ADHD symptoms.

    “Researchers are saying ADHD does not exist. What you’re looking at are sleep-deprived kids.” —James Nestor [21:31]

• DIY Assessment and Interventions

  • Signs: Mouth breathing, audible breathing, snoring.
  • SnoreLab/SnoreClock apps: Easy at-home monitoring of breathing patterns.
  • Intervention:
    • Nasal breathing is step one. For kids: Myotape (gentle tape around the mouth) trains nasal breathing without obstructing communication (26:42–28:46).
    • Mouth tape: Simple medical tape for adults is a “game changer”—Nestor wears it nightly for reliable sleep and recovery (28:54–30:19).

    “I have worn it almost every single night for the past seven years… I can see it in my sleep scores.” —James Nestor [28:54]

Air Quality, CO2, and the Modern Traveler

• Hidden Threats in Indoor Air

  • Indoor CO2 can triple from baseline atmospheric levels, causing cognitive decline, headaches, and fatigue (31:34–34:29).

    “Certain cognitive test scores can go down about 50% by tripling CO2 [to 1500ppm].” —James Nestor [33:04]

  • Planes and most “Green” hotels often have CO2 far above healthy levels due to recirculated air (35:35–36:11).

• Tools and Solutions

  • CO2 Monitoring:
    • Best consumer device: Aranet4 [37:12].

    “Most of the crap you see on Amazon is worthless... Aranet4, that’s the best one.” —James Nestor [37:12]

  • Hotel Hacks:
    • Call ahead to ensure windows open, aim for air flow over green certifications.

Travel Biohacks & Quirky Essentials

• Travel Kit Musts:
  • Red night light bulbs for circadian rhythms, sleep tape, supplement “granny packs,” and a personal CO2 monitor (40:31–43:30).
  • PEMF (Pulsed Electromagnetic Field) Device:
    • “Somewhat Russian” gadget for pain, grounding, and experimental frequency programs. Nestor and friends have seen anecdotal benefits, though research continues (45:52–49:05).

    “This thing hasn’t really fixed a lot of issues... If I was going to place my money on anything, this is where things are going to go.” —James Nestor [47:12 / 49:05]

  • Supplements: Classic bases—Vitamin D, K2, E, CoQ10, nattokinase; emergency pack for illness.

Breathing for Athletes & Performance

• Why Athletes Still Breathe Inefficiently:
  • Even elite athletes often have dysfunctional breathing patterns; most breathe only into the chest, not engaging the diaphragm (57:35–59:55).
• Nasal Breathing vs. Mouth Breathing:
  • Nasal-only breathing at lower intensity zones is the foundation.

    “The number one thing you can do... is become an obligate nasal breather.” —James Nestor [26:42]

• Bolt Score Tracking:
  • Body Oxygen Level Test (BOLT): Inhale and exhale naturally, then hold breath at neutral until the first urge to breathe; measure duration (61:45–63:12).

    “The more you focus on your breath… you’re going to watch that Bolt score go up and up and up.” —James Nestor [61:48]

• Training Innovations:
  • Diaphragmatic retraining is critical.
  • Devices like inspiratory muscle trainers work well—start slow to avoid soreness (64:46–68:56).
  • “Email apnea”: Breathing habits degrade under stress; simple devices (even a straw) can help maintain rhythm (68:59–70:03).

    “If I use a little device like this, it just reminds your body to keep with that rhythm.” —James Nestor [68:59]

The Craft & Business of Writing

• Writer’s Grotto Lessons:
  • Importance of treating writing as a business, not just as art (75:09–76:09).
• Writer’s Block is a Privilege:
  • True working writers don’t have the luxury.

    “Every professional writer I know…has never experienced writer’s block.” —James Nestor [76:09]

• Transitioning Careers:
  • Quitting his corporate job was impulsive; took years of hardship before writing became self-sustaining (79:28–82:38).
• Book Structure Breakthroughs:
  • Cutting a 290,000-word draft to 85,000 words by finding a compelling throughline (his Stanford breathing experiment), then weaving all stories and science through that narrative (90:34–95:43).

    “There is always a way out and you’ll find it.” —James Nestor [95:44]

Breathing, Prayer, and Heart Rate Variability

• Cadenced Breathing Patterns:
  • Ancient prayers (rosary, mantras) involve slow 5–6 second inhales and exhales—shown to induce coherence, improve heart rate variability, and optimize brain function (96:43–98:44).

Breathwork Culture: Simplicity First

• Breathwork vs. Breathing:
  • Culture around “breathwork” can distract from the foundational importance of simply normal, healthy breathing.

    “The most helpful thing you can do for yourself is just to be a normal breather. You don’t have to go sign up for a breathwork class.” —James Nestor [99:06]

Notable Quotes & Memorable Moments

• “The reason I mention [my talks at medical schools and banks] is because every single time... there’s a line of people, they’re all complaining about the same things and they’re completely pissed off... that they had to learn about this stuff in a book by a journalist and not from their doctor.” —James Nestor [19:25]
• “If you can hear them breathing [at night], they are struggling to breathe.” —James Nestor [24:06]
• “Mouth tape... sucked for about two weeks. It was terrible. Then I got over the hump.” —James Nestor [28:54]
• “In the hotels that have the big plaques outside that say LEED certified, green certified... have by far the worst quality air. I’ve recorded 2,800 parts per million waking up in one of these hotels.” —James Nestor [35:35]
• “If you do [inspiratory muscle training] with a rounded back... the amount of back soreness you will feel... is shocking.” —Tim Ferriss [67:14]
• “If you look at LeBron now, waiting in between plays, what’s he doing? Most of the time he’s doing breath work and he’s doing it properly.” —James Nestor [63:40]
• “Boredom is the most wonderful muse of all.” —James Nestor [90:34]

Timestamps for Important Segments

• Maurice Dubarre & Tummo: 02:33–07:14
• Personal Breathwork Journey: 10:07–13:11
• ADHD & Sleep Disorders in Kids: 19:25–24:06
• Mouth Tape & Nasal Breathing: 26:42–30:42
• CO2 in Indoor Environments: 31:34–39:51
• Travel Kits and PEMF: 40:31–49:05
• Athletic Breathing, Nasal Breathing: 57:35–60:29
• Bolt Score Test: 61:45–63:12
• Breath Devices & Email Apnea: 68:59–70:03
• Writing & Writer's Block: 75:09–78:53
• Book Structure & Editing: 90:34–94:00
• Breathing and Traditional Prayer: 96:43–98:44
• Final Tips on Breathing & Sleep: 101:06–104:56

Practical Tools & Takeaways

• Sleep/Snoring: Use SnoreLab or SnoreClock app, try mouth tape or Myotape.
• Travel: Carry Aranet4 CO2 monitor, open windows when possible, use red nightlights, and stay in rooms with real air flow.
• Athletic Training: Adopt nasal-only breathing, retrain diaphragm, use inspiratory muscle trainers—with caution.
• Productivity: Combat “email apnea” with gentle breath resistance devices (e.g., the Relaxator).
• Home & Family: Assess kids for mouth breathing and intervene early to ward off sleep, growth, and behavioral problems.

Closing Thoughts

James Nestor’s research and lived experience underscore that quality of breathing is central to health—often overlooked by both medical professionals and the general public. His advice: before diving into elaborate protocols, reclaim the power of simple, efficient, nasal breathing.

“Before you go into hardcore breathwork, get your breathing to a normal place and see the benefits from that.” —James Nestor [99:06]

Resources & Where to Find James Nestor

• Website: mrjamesnestor.com
• Instagram: @mrjamesnestor

For further protocols, audio tracks, and resources, visit the website or the show notes at Tim Ferriss’s blog.