Vital / Guides

Health Guides

Deep, science-based guides to help you understand your health numbers and make informed decisions.

Understanding BMI: A Complete Guide

What your Body Mass Index means, how it's calculated, its well-known limitations, and what to actually do with the number. Includes healthy ranges, the formula, and a better approach than BMI alone.

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Understanding Macros

How to calculate protein, carb, and fat targets for your goals. Includes worked examples and common macro tracking mistakes.

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Daily Calorie Needs

BMR, TDEE, activity factors — everything you need to know about how many calories you actually burn each day.

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Healthy Hydration

How much water should you really drink? The science of daily water intake, signs of dehydration, and building the habit.

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Body Fat Percentage Guide

Healthy ranges by gender, measurement methods ranked by accuracy, and why body fat matters more than BMI.

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