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BodyCompOS

Research-Backed Guides

Body CompositionStrategy Guides

Evidence-based guides on the decisions that matter most in body composition. Each guide is built on peer-reviewed research — ISSN, ACSM, and published meta-analyses — designed to cut through the noise.

8 Expert Guides~60 min total readingISSN & ACSM citedReviewed June 2026
12 min read

Strategy Decision

Should I Cut or Bulk?

An evidence-based decision matrix using body fat thresholds, training age, and metabolic signals to determine your optimal strategy.

StrategyFat LossMuscle Gain
9 min read

Recomposition

Body Recomposition Guide

Simultaneous fat loss and muscle gain is real — but it requires specific conditions. Learn who qualifies and how to approach it correctly.

RecompStrategyProtein
10 min read

Nutrition Science

Protein Nutrition for Body Composition

ISSN guidelines decoded. How much protein you need by goal, timing considerations, and what the research actually says about muscle protein synthesis.

NutritionProteinMuscle
8 min read

Body Composition

Understanding Body Fat Percentage

What body fat percentage means, how to estimate it accurately, which methods are reliable, and how to use it for strategy selection.

AssessmentBody FatMetrics
8 min read

Energy Balance

Maintenance Calories & TDEE Explained

TDEE formulas, activity multipliers, metabolic adaptation, and how to empirically confirm your real maintenance level from trend data.

CaloriesTDEEMetabolism
11 min read

Metabolic Adaptation

Breaking a Weight Loss Plateau

Stuck in a calorie deficit but not losing weight? Unmask cortisol water retention, calculate NEAT offsets, and break stalls.

PlateauDeficitCortisol
7 min read

Nutrition Strategy

How to Eat in a Calorie Deficit

Translate your calorie and protein targets into actual meals. Learn what to eat, how to portion, and how to structure your day for sustainable fat loss.

NutritionDeficitFat Loss
6 min read

Nutrition Science

High Protein Diet for Body Composition

Why high protein is the single most important dietary lever for body composition change — and how to hit your targets with real food.

ProteinNutritionMuscle

Ready to act on it?

Turn knowledge into your personal strategy

The Strategy Finder translates your inputs — body fat, goal, training age, activity — into a concrete recommendation with calorie and protein targets.