Week 15

September 27 – October 3, 2026 · Days 99–105 · 7 entries

Days 99–105 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 99 · Sunday, September 27, 2026

Day 99 — From Cathar Dualism in the Pyrenees to Catalonia’s Right to Vote for an Independent nation

Sitting on the eve of triple digits—tomorrow marks Day 100—today’s reflection connects a defining chapter of medieval history with one of modern Europe’s most contentious democratic questions: the Cathars' radical theology of dualism, and whether the people of Catalonia should have the democratic right to vote on independence. 🏰 The Cathars & The Theology of Dualism Flourishing across Occitania and the Catalan Pyrenees during the 12th and 13th centuries, the Cathars (or Bons Homes / "Good Men") offered a worldview that shook medieval Europe to its core:

Day 100 · Monday, September 28, 2026

Day 100 — 5.3 lbs Fat Down, +6.3 lbs Lean Mass Up

Welcome to the official Day 100 Milestone of the One Year Fast! I’m Alfie Hammersham. Launched on the 2026 Summer Solstice, this 52-week personal health study documents an intensive protocol: fasting three full days per week for 52 consecutive weeks. Today marks 100 consecutive days of this public experiment, coinciding with our official national press release detailing comprehensive clinical biomarkers alongside the psychological realities of sustained abstinence.

Day 101 · Tuesday, September 29, 2026

Day 101 — Memories of a Rag & Bone Man on the streets of North London. Day 101 of the One Year Fast

Having officially crossed our 100-day milestone and entered the second century of this 52-week journey, today's journal blends a rich reflection on 19th-century living with practical real-time updates from Week 15, including a mid-week schedule shift and an unexpected craving. 🐎 Reminiscing About a Rag & Bone Man Born in the 1800s Stepping back into personal memories to touch living history:

Day 102 · Wednesday, September 30, 2026

Day 102 — Lincolnshire roads compared to Amtrak rail in New England. Will Antarctica Bottled Water? Day 102

Today’s journal crosses continents and landscapes, contrasting the rolling transitions of Lincolnshire with the Northeast Corridor rails of New England, while hitting a distinct physiological bump at the halfway mark of a 48-hour fast. 💧 Fasting Realities: Hour 24 of 48 & Battling Dehydration The 24-Hour Hurdle: Reaching hour 24 of a 48-hour fast, I’ve hit a noticeable wave of dehydration.

Day 103 · Thursday, October 1, 2026

Day 103 — The 2048 Antarctic Water & Mining Loophole + Week 15 Fasting Ketone Update. One Year Fast, Day 103

Today, we dive into a major global question surrounding Antarctica and the year 2048, alongside a fasting update as I wrap up a 48-hour fast in Week 15. The 2048 Antarctica Madrid Protocol: Protection or Exploitation? There is a widespread idea that Antarctica automatically becomes open for legal exploitation—minerals, oil, gas, and natural resources—in 2048. That is completely false.

Day 104 · Friday, October 2, 2026

Day 104 — EV Revolution: Will Manual Cars Disappear?

In this daily YouTube post, Alfie reflects on the shift toward electric vehicles and compares the culture of manual gearboxes in the United Kingdom with automatic cars in the United States, alongside the continuing One Year Fast journal.

Day 105 · Saturday, October 3, 2026

Day 105 — Does Fasting Alter Our Perception of Time?

In this daily YouTube post, Alfie considers whether fasting changes the way time is perceived and whether the practice creates more room for mindfulness, documenting the subjective observation as part of Day 105 of the One Year Fast.

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