Journal
Field notes from the work.
One issue a week. Published on Substack.
What biofeedback is and how it can help you. What I am reading on assessment days. What is moving in programmes. How the method changes when the input under everything is trained.
Archive · 6 issues
All issues on Substack →Method note
Your Stress Has a Favorite Organ
Why the way your body carries stress is specific to you, and why that is where recovery actually starts.
12 July 2026Read on Substack →Method note
Start here
Who this letter is for, what you'll get, and the two posts to read first.
7 July 2026Read on Substack →Method note
I Spent Months Breathing at the Wrong Pace Before I Found My Resonance Frequency
Personal to your body, findable by app or by hand.
7 June 2026Read on Substack →Method note
What's actually holding your heart rate down
It's your vagus nerve, holding a brake on your heart every second of the day. It's trainable, and I will show you how you can watch it work.
31 May 2026Read on Substack →Method note
What slow breathing actually does inside your autonomic nervous system
First in a four-part arc on resonance frequency breathing. The physiology underneath it, and the three numbers I read in every session: morning RMSSD, HRV-CV, and training LF power.
26 May 2026Read on Substack →Method note
Welcome. What This Letter Is For.
Founder letter. A research participant came to train his nervous system for judo. The most useful skill he built was the one that put his five-year-old to sleep.
17 May 2026Read on Substack →