October 18, 2026 · Clearer terminology and reading refinements
The opening now reads “Activation without exertion.” Introductory text, chart labels, and navigation descriptions identify mental and emotional stimulation and autonomic activation explicitly. Scientific uses of arousal retain their context in the research.
A small copper key replaces the square logo accent. The reading layout has been refined for tablet and narrow phone screens. Search now recognizes typographic equivalents such as CO2 and CO₂, and copied citations include their page address.
October 18, 2026 · Clearer explanations and purpose
The homepage introduces the activation–exertion mismatch through an illustrated opening, an accessible explanation, and a physiological formulation. The accessible explanation develops the fight-or-flight preparation for movement and its repeated activation during sedentary life. The physiological formulation follows the full proposed cascade in two continuous paragraphs. A paired schematic contrasts ventilation accompanied by physical exertion with the proposed effect of autonomic activation while sedentary. The same explanation and graphic appear in the introductory guide.
The mission states the purpose of freely disseminating ideas and evidence about acquired breathing dysfunction and carbon dioxide regulation. A visible acknowledgment of the Buteyko breathing community recognizes a foundation of this work.
The homepage now leads with the initiative’s research and mission. The personal history is presented separately in the founder’s account, linked from About and the footer. The complete chronology and individual manuscript author credits are retained. All nine manuscripts remain available in full, with source links, tables, figures, and unnumbered section headings. Separate PDF downloads have been removed.
October 2026 · The current digital-paper edition
The direct amygdala branch was removed from The Digital Overbreathing Hypothesis. Sleep-mediated emotional effects remain. The standalone amygdala manuscript continues as a separate research track.
The revised paper adds the qualitative interaction between baseline respiratory stability and acute evening arousal, separates neural carryover from the bicarbonate-adaptation tier, centers restorative throughput rather than a shorter clock duration, and credits McKeown and colleagues’ breathing-reeducation prior art.
These are scoped refinements. The plant-gain/controller-gain argument, the state-transition account, the population continuum, and the distinction between arousal load and screen time were preserved. The revision does not claim that every disagreement about the broader framework has been resolved.
October 2026 · Later author observations
The author reports a continued improvement in post-exhalation holding performance, sustained perceived sleep recovery without CPAP, and a reduced apparent sleep effect from pre-bed digital engagement. The observation page distinguishes this update from the earlier manuscript and identifies the measurements still needed to explain it.
Pharmacology · Separate stabilization from plasticity
The later design discussion retains the question of whether acute stabilization and durable respiratory adaptation require different conditions. It removes yohimbine plus awake rebreathing from the proposed lead combination. The historical three-drug manuscript remains accessible, with a prominent note that the third leg is no longer the current direction.
Acetazolamide and neurosteroid modulation remain research questions. Claims that a particular combination preserves learning, prevents tolerance, or produces durable off-drug recalibration require direct testing. This site does not turn the revised architecture into a drug regimen.
The public editions
All nine papers are published in full in the research library. The website is the reading edition; separate PDF downloads have been removed. Page checksums are listed in the edition manifest, and the source bibliography can be exported as BibTeX.
The original source dates are retained where stated. Public editions carry their own preparation date so that a later public copy is not mistaken for a contemporaneously archived publication.