Santé et bien-être · Glossaire
What is Lean Body Mass?
Définition rapide
Total body weight minus all body fat. Includes muscle, bone, water, organs, and connective tissue.
Explication complète
Lean Body Mass (LBM) is everything in your body that is not fat: muscle, bone, water, organs, skin, tendons. LBM is typically 60–90% of body weight, varying by sex, fitness level, and body composition. Athletes have higher LBM (more muscle). LBM is what burns calories at rest — more LBM means higher BMR and easier fat loss. Tracking LBM (vs. just weight) is critical for body recomposition: someone losing fat and gaining muscle may weigh the same but improve composition. LBM is estimated via body fat % measurements or directly measured via DEXA scans. Protein intake and resistance training are the main drivers of LBM gains.
Calculatrices liées
Calculators that use or explain Lean Body Mass.
Termes liés
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BMR (Basal Metabolic Rate)
The number of calories your body burns at complete rest, performing basic functions like breathing and circulation.
TDEE (Total Daily Energy Expenditure)
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Macronutrients
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Body Fat Percentage
The proportion of total body mass that is fat. A more accurate health metric than BMI for body composition.
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Last reviewed: June 15, 2026 • Category: Santé et bien-être