What this record contains
For the experience that prompted the research, read the founder’s account. This page provides the technical chronology behind that account.
The primary sleep paper describes a personal sequence of severe sleep fragmentation, changes in breathing practice, timing adjustments, and reported recovery. Its value is the chronological detail: different changes were introduced at different points, and some effects improved while others remained. The record generates mechanistic questions; it is not a controlled trial.
The charts below reproduce reported ranges and approximate measurements from the manuscript. They are not reconstructed polysomnography, continuous monitoring, or independent clinical verification. The later October update is labelled separately because it postdates the source manuscript. Read the full primary account.
Three phases, different observations
Phase one: general regulation. The account describes morning light, exercise, stimulation reduction, breathing practice, and discontinuation of caffeine and several sleep-related substances. Reported anxiety improved from approximately 7/10 to 5.5/10, while fragmented sleep persisted. Those changes are part of the record and make it important to distinguish the later interventions chronologically.
Phase two: respiratory training. Seated breath holds and nasal-only running were added. The manuscript reports control-pause progression from roughly 10 seconds to more than 45 seconds over about four months. Reported awakenings declined from 12–15 to 2–4 per night, with a substantial improvement in perceived restoration.
Phase three: timing. Intense breath-hold sessions were moved from evening to morning. The paper describes further improvement, with 1–3 reported awakenings per night. This timing observation is retained as a separate question; the report does not directly measure the proposed orexin or sympathetic mechanisms.
Reported awakenings across the recovery sequence
What the sequence contributes
The phase structure is more informative than a single before-and-after statement. It identifies a plateau, an additional intervention, and a subsequent timing effect. That sequence supports designing an experiment in which general arousal management, respiratory conditioning, and time of practice can be compared separately.
It does not convert breath-hold duration into a measured chemoreceptor setpoint. Learning, starting lung volume, discomfort tolerance, protocol, and respiratory physiology can all affect a voluntary hold. The hypothesis can be tested more directly by measuring the proposed respiratory variables alongside the performance measure. Messineo et al., 2018
October 2026: the changed response to screens
The author subsequently reported repeatable post-exhalation holds of roughly 70 seconds, months without CPAP and without perceived regression, and little observable sleep effect from substantially increased pre-bed digital engagement. These are author-reported updates, not new laboratory measurements. The latest holding performance should not be treated as interchangeable with every earlier control-pause endpoint.
The important new question is the change in exposure sensitivity. Earlier, removing evening technology reportedly made a noticeable difference; later, reintroducing it did not recreate the same sleep problem. The proposed explanation is a wider respiratory operating margin, with the arousal perturbation still present but no longer large enough to be the sleep bottleneck.
The next test should measure both sides of that claim: the acute response to a matched exposure and the baseline respiratory state before and after recovery. The report of CPAP independence is part of this personal history, not a criterion for another person to discontinue prescribed treatment.
From observation to a reproducible record
A prospective version would pre-specify the breath-hold endpoint, collect sleep diaries and objective respiratory measures, repeat matched screen challenges, and retain unfavorable as well as favorable results. Recording changes in activity, medication, caffeine, light, and sleep opportunity would make the next iteration more interpretable.
The research aim is to explain why the response changed, with a design that can distinguish respiratory improvement from changes in other variables. See the proposed moderation study.