Week 13

September 13 – September 19, 2026 · Days 85–91 · 7 entries

Days 85–91 of the One Year Fast project, written up day by day: three full fasting days in the week, what happened on each of them, and the weight, blood pressure and ketone readings recorded on those dates. Every figure shown here is measured on the day, not reconstructed later.

Day 85 · Sunday, September 13, 2026

Day 85 — One Year Fast, Day 85. 96 hours into a 6 day fasting session. Saint Clare and Saint Francis Fasting

In today’s log, we cross the 96-hour mark of an ongoing 144-hour fast, pairing hard biomarker data and intense physical exertion with an examination of Christian asceticism. We look back at the fasting practices of St. Francis of Assisi (1181/82–1226) and St. Clare of Assisi (1194–1253). While modern fasting often chases autophagy, fat loss, or cognitive enhancement, Francis and Clare approached voluntary abstention as a pathway to self-denial, humility, and spiritual reliance. Yet, both recognized the danger of unchecked asceticism. Francis broke rules to protect struggling brothers, and Clare later warned Agnes of Prague that the human body requires prudence and discretion.

Day 86 · Monday, September 14, 2026

Day 86 — One Year Fast: Day 86: Will an Autophagy Analyzer Ever Exist? + Day 5 of 6 Fasting session

Welcome back to Day 86 of the One Year Fast (Week 13). I’m Alfie Hammersham. Today marks Day 5 of my 6-day extended fasting session—the final stretch of this protocol. In today’s video, we tackle one of the biggest questions in modern fasting and longevity science: Will an autophagy analyzer or reader ever be available for everyday use?

Day 87 · Tuesday, September 15, 2026

Day 87 — Day Fast Complete! 13lbs Down, How I’m Breaking It & Next DEXA Scan

Today marks the official completion of my 6-day extended fasting session, bridging across Weeks 12 and 13. In this video, I break down the final scale results—logging a 13-pound drop over the 6 days—and detail my careful re-feeding strategy alongside an exciting milestone coming later this week. Weight Loss: Stepping on the scale to see a cumulative drop of 13 lbs.

Day 88 · Wednesday, September 16, 2026

Day 88 — One Year Fast: Day 88. Fasting is not real Hunger! Why I considered ending the One Year Fast early

Last night, I seriously considered walking away from the One Year Fast. I was confronted by an uncomfortable question: Does documenting voluntary fasting trivialize the tragedy of involuntary hunger? Fasting exists entirely in a "safe zone"—at any moment, I can open the fridge and replenish. In contrast, millions around the world live in a tragic "danger zone," where extreme hunger has no immediate remedy. Without addressing this, the project risks looking self-indulgent, performative, and disconnected from the reality of global food insecurity.

Day 89 · Thursday, September 17, 2026

Day 89 — Circadian Health, Heart Attacks

As someone exploring metabolic timing, feeding windows, and physiological optimization, the intersection of solar time, biological time, and artificial social time is impossible to ignore. Our bodies evolved an internal master clock—the suprachiasmatic nucleus (SCN)—governed by natural sunlight, not parliamentary mandates or government decrees. When society abruptly shifts social time by one hour, what actually happens to our health?

Day 90 · Friday, September 18, 2026

Day 90 — One Year Fast: Day 90: My VO2 Max Dropped 15% (49.1 to 41.4) + The Question About Bottled Water!

The Hard Data: A 15% VO2 Max Drop Honesty and transparency are central to this journey. In June, my baseline medical-grade test put my VO2 Max at 49.1 ml/kg/min. Today, the retest came back at 41.4 ml/kg/min—a drop of roughly 15%. Training Modalities & Sledge Pulls: Did the shift in training stimuli and high-volume sledge work impact top-end aerobic capacity vs. strength endurance?

Day 91 · Saturday, September 19, 2026

Day 91 — One Year Fast, Day 91: Returning Hume Health Band for Garmin Venu + Reversing My VO2 Max Decline!

The Wearable Decision: Returning Hume Health Band, Buying Garmin Venu After giving the Hume Health Band 2.0 a thorough run alongside my other tools, I’ve decided to think about returning it and invest in the Garmin Smartwatch Venu.

Readings shown on each entry come straight from the health dashboard data logged on that date. The exact procedure, device and known limitations behind each measurement are documented on the methodology pages. For definitions of any term used above, see the fasting dictionary.

Written by Alfie Hammersham — founder of One Year Fast, who is fasting three full days a week for 52 consecutive weeks and publishing every biomarker openly. Not a doctor; every physiological claim on this site is referenced to published research, and lived experience is labelled as such.

Physiological claims on this page are cited to peer-reviewed studies; first-hand readings come from one subject and are labelled as personal experience. See the editorial & sourcing policy for how this is written, reviewed and corrected.

About the author · Editorial policy · Corrections & contact · Medical disclaimer