Health & Body Guides
Plain-English guides to nutrition, calories, macros and body composition — all with real numbers you can act on.
How Many Calories Per Day Do You Actually Need?
Your calorie needs depend on your age, weight, height, sex and how active you are — not on a generic 2,000-calorie figure. This guide explains how to calculate your TDEE and set the right calorie target for your goal, whether that is losing weight, maintaining or building muscle.
Read guide →What Is a Safe Calorie Deficit for Weight Loss?
A 500-calorie daily deficit is commonly cited — but is it right for everyone? This guide explains how to find a deficit that produces steady fat loss without triggering muscle loss, fatigue or metabolic adaptation.
Read guide →Macros Explained: Protein, Carbs and Fat in Plain English
Macronutrients are the three nutrients your body uses for energy. This guide explains what each does, how many calories each provides and how to split your macros based on your goals — from fat loss to muscle gain.
Read guide →How Much Protein Do You Need for Weight Loss and Muscle?
Protein intake affects satiety, muscle retention during fat loss and muscle gain when bulking. This guide gives evidence-based targets in grams per kilogram of body weight for different goals and activity levels.
Read guide →BMI vs Body Fat Percentage: Which Is More Useful?
BMI is quick and widely used but ignores the difference between fat and muscle. Body fat percentage is more accurate but harder to measure. This guide explains both, their limitations and which to use for your situation.
Read guide →How Much Water Should You Drink Per Day?
The "8 glasses a day" rule is not based on science. Your actual needs depend on your body weight, activity level and climate. This guide explains how to calculate your personal hydration target and the signs you are getting it right.
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