James Nestor is a science journalist and the author of the international bestseller Breath: The New Science of a Lost Art, with more than three million copies sold in 44 languages.
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Timestamps:
[00:00:00] Start.
[00:01:37] Why I waited years to interview James about Breath.
[00:02:35] Maurice Daubard: The mysterious 90-year-old who preceded Wim Hof.
[00:05:01] Tummo breathing: Ancient Bon Buddhist heat generation.
[00:08:13] James’ personal breathwork practice and the Wim Hof method (with warnings).
[00:09:25] How breathwork cured James’ chronic respiratory issues.
[00:11:46] Sudarshan Kriya: The weekend workshop that changed everything.
[00:16:56] My nine-minute breath hold experiment (hyperbaric chamber edition).
[00:18:57] Post-book revelations and angry doctors’ offices.
[00:20:41] The ADHD-breathing connection: A controversial Venn diagram.
[00:22:00] DIY breathing assessments for kids.
[00:25:55] Mouth tape: From hostage situations to sleep optimization.
[00:28:48] James’ seven-year mouth taping commitment.
[00:31:14] CO2 levels: Your LEED-certified hotel is suffocating you.
[00:36:50] Monitoring CO2 with the Aranet4 and building a CO2 database.
[00:39:51] James’ travel kit: Red lights, granny packs, and a Soviet-era PEMF device.
[00:51:59] In Weirdville, eyes sing The Body Electric.
[00:52:58] The supplements included in David’s granny packs.
[00:54:16] Natto vs. nattokinase.
[00:56:18] Athletes and breathing: The BOLT score explained.
[01:03:25] LeBron James’ alternate nostril breathing and diaphragmatic dysfunction.
[01:04:47] Inspiratory muscle training and the back soreness warning.
[01:08:47] The Relaxator: An adult breathing pacifier for focus.
[01:12:54] San Francisco Writers Grotto and the trustafarian invasion.
[01:16:10] Writer’s block: A convenient excuse for hobbyists.
[01:19:04] Cutting the corporate cord: James’ visceral “I quit” moment.
[01:23:25] The freediving story that launched a book deal.
[01:25:41] Deep‘s disappointing launch and publisher betrayal.
[01:28:10] Breath: From 290,000 words to 85,000 in a house in the woods.
[01:31:51] Finding the skeleton: The Stanford experiment as through-line.
[01:35:44] Prayer and coherent breathing: The 5.5-second secret.
[01:38:44] James’ critique of breathwork culture and barriers to entry.
[01:41:07] Sleep optimization: SnoreLab, side sleeping, and incline bed therapy.
[01:44:56] Parting thoughts and where to find James and free breathing protocols.
*
Show notes for this episode: https://tim.blog/2025/09/30/james-nestor-breath/
For show notes and past guests on The Tim Ferriss Show, please visit tim.blog/podcast.
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