The learning library
Understand the numbers.
Keep the context.
Practical answers about energy, nutrition, and the records you keep. Each guide explains the idea, shows the assumptions, and gives you sources to check.
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Try the arithmetic
Illustrations, not prescriptions. Inputs stay in your browser.
Energy and weight
How do I estimate my maintenance calories?
Understand resting versus total energy needs, try a transparent estimate, and see what the number cannot tell you.
Read guideWhat is a calorie deficit, and how should I think about it?
Separate the energy-balance concept from an individual diet prescription, with a worked example and practical limits.
Read guideWhy does my weight change from day to day?
Read scale changes without mistaking every rise or fall for fat change, and make comparisons more consistent.
Read guideWhat should I check when weight loss seems to plateau?
A troubleshooting sequence for a flat trend: comparability, incomplete records, changing needs, and when to seek help.
Read guideShould I eat back the calories from my workout?
Check what the exercise number includes, avoid double-counting activity, and separate tracking from sports fueling.
Read guide
Protein and macros
How much protein do exercising adults need?
See a research-based range, convert body weight into grams, and understand who the estimate does not cover.
Read guideHow do calorie and macro targets fit together?
Understand grams versus calorie percentages, work through a complete example, and avoid mistaking a split for diet quality.
Read guide
Food records
Published by POWR. General education, not medical advice or independent clinical review. For questions about the app itself, use product answers or support.