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Knowledge Base

Evidence-based guides on nutrition, training and recovery — written for lifters, not clickbait.

Getting started

What is METRI?

A quick tour of the open-source fitness toolkit — calculators, programs and a knowledge base.

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Nutrition

How to track macros

Set protein, carbs and fat targets that actually match your goal — and the math behind them.

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BMR & TDEE explained

What your maintenance calories really mean, the formulas behind them, and how to use the number.

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Training

Progressive overload

The one principle that drives every gain — and practical ways to apply it without burning out.

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Recovery

Sleep, deloads & recovery

Training is the stimulus; recovery is where you adapt. How to manage fatigue so gains actually show up.

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METRI

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