---
title: The newsletter for advancing intermittent fasting and performance | Chris Dunkerley
description: Explore advanced intermittent fasting for plant-based performance. Real-world data on fasted training, 48-hour cycles, protein calibration and metabolic adaptation.
---

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# Join the Beyond 20:4 Field Notes

This is structured experimentation in advanced intermittent fasting and plant-based performance.

I test fasting windows, fasted strength and running sessions, extended 48-hour Sunday–Tuesday cycles, and protein calibration within a disciplined plant-based diet.

The newsletter shares the data, the adjustments, and the measurable outcomes.

## What You’ll Receive

1. Observations from fasted training sessions
2. Data from weekly 48-hour fasting cycles
3. Refeed strategy refinements
4. Salt and hydration adjustments before performance
5. Protein calibration trials within a plant-based structure
6. Measured changes in weight, waist, recovery and performance

**Each issue outlines** what was tested, what happened, and what changed next.

 

## Who This Is For

For those who have moved beyond beginner intermittent fasting and want to understand performance while fasting.

This will be **relevant if you are exploring:**

1. How extended fasting affects athletic performance
2. How plant-based nutrition influences recovery
3. How metabolic adaptation shifts over time

## Follow the Experiment

Beyond 20:4 is the manuscript I'm developing from this ongoing experiment in advanced intermittent fasting.

The newsletter shares the field notes as the structured framework evolves.

Subscribe if you’re interested in advancing fasting and/or performance within a measurable system.

[Join the Newsletter](https://www.chrisdunkerley.uk/the-newsletter-for-advancing-intermittent-fasting-and-performance-chris-dunkerley)

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