Within-athleteForthcoming
When the same signal means different things for different athletes.
Population studies describe a cohort your athlete may not resemble. The training call has to come from their own history.
Est. 6 minJul 2026
Field Notes
Field notes for athlete data analytics.
Practical notes on the questions coaches actually ask: what to change, what to watch, when to wait, and how to give an AI coaching agent the evidence packet before it writes.
Latest note
Readiness scores tell you today. They do not tell you the lever.
Why one recovery number can be useful context and still fail to answer what a coach should change in training.
Read the note →Published and plannedBuilt around search intent
Coach decisionPublished
What should I change for this athlete this week?
A plain-English guide to turning athlete exports into one defensible weekly training adjustment.
6 minRead →
AI coachingPublished
Why AI coaching agents need an evidence packet before they advise.
Give the agent the driver, effect, interval, sample, caveats, and claim license before it writes.
6 minRead →
MethodPublished
The same load that built them last week is breaking them this week.
A field guide to effect modifiers, the condition under which an average training effect flips sign.
4 minRead →
MethodForthcoming
Why not enough evidence yet is a coaching feature, not a failure.
Most tools render a verdict on three data points as confidently as on three hundred. The case for withholding one.
Est. 5 minJul 2026
MethodForthcoming
What survives refutation checks
How placebo shifts, uncertainty, and evidence gates separate a finding from a flattering fit.
Est. 6 minAug 2026
One note when one ships. Nothing in between.
No digest, no drip. We email when a field note is published — about once a month — and never about anything else.