Metabolic Flexibility
Metabolic flexibility is not a diet trend — it is a physiological capacity. In this deep-dive, I examine substrate utilization curves, mitochondrial adaptation, RER interpretatio
Fasted Half Marathon — Endurance Under Constraint
On September 21, 2025, I ran the Colmar Half Marathon in 1:31:54 — fully fasted. This is not a manifesto. It is a physiological field report. This expanded analysis examines subs
48-Hour Fast — Fuel Transition Analysis Under Real-World Conditions
A 48-hour fast isn’t a lifestyle trend. It’s a stress test. In this field report, I document what actually shifts across 12–48 hours under real executive workload: fuel trans
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