[ Journal / 01 ]

Field notes on performance & longevity.

Short essays from the lab floor. What we measure, what the numbers mean, and how we translate them into training.

Performance
14 Jun 2026 · 6 min read
Why VO2max is the single best predictor of longevity
A high VO2max is more strongly associated with lifespan than smoking, diabetes or hypertension. Here is what the number actually measures — and how to move it.
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Training
22 May 2026 · 5 min read
Strength after forty: the non-negotiable
Lean mass and force production collapse from the fourth decade onwards. Resistance training is the only intervention that reliably reverses it.
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Diagnostics
30 Apr 2026 · 4 min read
Why the scale lies, and DEXA doesn't
Body weight tells you nothing about the ratio of muscle to fat, or where that fat sits. A DEXA scan resolves the picture in eight minutes.
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Training
18 Mar 2026 · 5 min read
Mobility is a skill, not a stretch
Passive range of motion without control is a liability. Real mobility is active, load-bearing, and trainable.
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