The same molecule that looks dangerously low at 2 am can be perfectly normal at 8 am — in the same person. This series explores why, starting from the very beginning. No assumed knowledge. Just the science, made human.
Blood is drawn at 9 am in one lab, 2 pm in another. Participants fast for 8 hours in one study, 14 hours in the next. Nobody records whether the subject slept well, saw morning light, or had shift work the night before. Then we wonder why biomarker findings don't replicate.
This is not a minor methodological nuisance. Half of your circulating metabolites oscillate with the time of day. The molecule that flags as "low" on your blood test might simply be at its natural trough — a rhythm your body has run every night for decades.
This is not a journal club. It's not a textbook. It's a structured series written by someone who works in this field and got tired of explaining it from scratch every time — so decided to do it once, properly, in public.
Every chapter starts with the science. Then it asks: what does this actually mean for the person trying to understand their fatigue, their cortisol, their sleep, their metabolic health? The research doesn't live in a vacuum. Neither should the explanation.
Written for researchers, clinicians, coaches, and anyone who wants to understand metabolism at a level deeper than "eat less, move more."
Each article builds on the last. Read in order for the full picture, or jump to whatever interests you most.
The series is designed to be read in order. Each chapter builds on the last. Here is the full plan.
Sundays for deeper, conceptual reads. Thursdays for data-forward content. Coaching days on Tuesday and Friday stay completely separate.
Sunday reaches readers in slower, reflective mode — ideal for longer conceptual articles. Thursday hits mid-week when professionals are most engaged. Keeping coaching days separate protects your identity as an educator.
I work in chrono-metabolomics research and I also work with people — real people trying to understand why they feel the way they feel, why their labs look the way they look, why doing "all the right things" sometimes doesn't produce the results they expect.
What I've found is that most of the missing piece is time. Not more sleep, not different food — but the recognition that when things happen in the body matters as much as what happens. Your cortisol at 6 am and your cortisol at 6 pm are not the same signal. Your tryptophan after a bad night looks nothing like your tryptophan after a good one. The body is not static. It is a rhythm.
This series is my attempt to make that legible — from the molecular level up. Rigorous enough to be useful to researchers and clinicians. Human enough that anyone paying attention to their health can follow along and actually use it.
New chapters publish regularly. Each one builds on the last — subscribe and you'll never lose the thread. No noise, no newsletters-about-newsletters. Just the science, when it's ready.