Health Guides

Learn how to calculate and interpret your health metrics with our practical guides.

Browse by topic: BMI & body composition · Calories & macros

Infographic of 10 high-protein foods and their protein content per 100 grams

10 High-Protein Foods That Keep You Full New

The best high-protein, low-calorie foods for weight loss — with protein per 100 g, practical meal tips, and how to track every gram with USDA data.

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Illustration of BMI categories by height

What Is a Healthy BMI? Chart & Weight Range

BMI categories explained, weight ranges for your height, and why BMI is only one piece of the health puzzle. See the full chart and find your healthy range.

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Woman checking health metrics on her smartphone, including BMI and calorie intake

How to Calculate TDEE: Your Daily Calorie Needs

BMI tells you where you are — TDEE tells you what to do next. Calculate your daily calorie burn step by step and turn the number into real meals.

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Daily macronutrient split pie chart: 30% fat, 40% carbs, 30% protein

How to Balance Protein, Carbs and Fat (40/30/30)

A calorie is not just a calorie. Learn the beginner-friendly 40/30/30 macro split and turn your calorie target into real, filling meals.

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Illustration of the BMI formula on paper

How to Calculate BMI Manually Coming soon

The BMI formula step by step, in metric (kg/m²) and imperial (lbs/in² × 703) units, with worked examples you can follow along.

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Illustration of apple and dumbbell for healthy living

How to Lower Your BMI Safely Coming soon

Sustainable diet, exercise and lifestyle strategies for reaching a healthy BMI range — without crash diets or unrealistic goals.

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Want to run the numbers yourself? Try the free BMI Calculator, Calorie Calculator, or Weight Loss Planner.