The learning library

Follow your curiosity.

Source-linked explanations, useful questions, and room to rethink.

Ready to read

Four source-linked articles and a practical reference hub.

Tools & reference

Fitness Numbers & Charts

Twelve formulas and local calculators, with four original charts. Strength, cardio, nutrition, and progress—without turning estimates into promises.

Explore the numbers ↗
Measure What Matters

How do I know I’m getting fitter?

Choose a capability that matters to you, compare it fairly over time, and learn what strength tests, watches and body measurements can actually tell you.

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Build Physical Capability

How much strength training to start with

A manageable starting point: goals, sets, resistance, effort and progression.

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Build Physical Capability

How much exercise is enough?

Why 150 minutes became the target, what smaller amounts can do, and how to build a workable week.

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Understand Fitness

What does it actually mean to be fit?

Activity, exercise, and fitness: three ideas worth separating.

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