Patrick Dempsey · PE, MBA · Certificate in Nutrition Science, Stanford University
Spring 2026 · 7 min read · Biological Reserve Series, Final Video Companion
| 📺 This article companions the series finale: The Reserve Architecture — Watch on YouTube → |
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Biological Reserve Series — All Four Pillars
Pillar 1: The Cognitive Reserve → Pillar 2: The Cardiovascular Reserve → Pillar 3: The Musculoskeletal Reserve → Pillar 4: The Metabolic Reserve → |
Over the past several months I've put together what I think is one of the more important things this newsletter has ever covered.
The biological reserve series had a direct message underneath it: the way most of us train — as cyclists, as endurance athletes — is not enough. Not for the version of ourselves we want to be at seventy-five or eighty.
The final video pulls all four pillars into one place and asks a harder question: what are the findings that actually changed things? Not the most interesting — the ones I personally cannot un-know, and that seemed to land hardest with viewers and readers throughout the series.
That's what this article is. Four findings. What they mean. And the one insight that only appears when you see all four together.
Finding One — Every Hard Ride Was Also Working on Your Brain