Lean Body Mass (LBM)
Your total weight minus fat — muscle, bone, organs, and water. Used to set protein targets and evaluate composition changes.
Formula
LBM = weight (lb) × (1 − body fat %)
Healthy range
Varies widely with frame and training; a 180-lb man at 15% body fat has ~153 lb of lean mass.
Military & first-responder angle
Preserving LBM during ABCP weight loss is the difference between staying strong and getting weak — the reason programs pair calorie targets with strength training.
Calculator
Lean body mass from weight and an estimated body-fat %. Useful for tracking training progress.
Result
Quick answers
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