Two people can weigh exactly the same and look, move, and feel completely different. The difference is body composition — the ratio of muscle to fat and the distribution of both. It is a more meaningful health indicator than body weight alone.
How to measure it usefully
- DEXA scan — gold standard for research, useful every 3–6 months
- InBody / BIA — convenient, less accurate but useful for trends
- Progress photos — surprisingly informative when standardized
- Waist circumference — cheap, repeatable, correlated with visceral fat
- How clothes fit — underrated qualitative signal
“I've watched clients lose 15 pounds and gain a size, and clients lose 8 pounds and drop two sizes. Composition is the story. Weight is a rough summary.”
“The first thing I do with new clients is realign what 'progress' means. Once we're both looking at body composition instead of raw weight, better decisions follow. Suddenly it's obvious why protein and lifting are not optional.”
Related reading
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Muscle Preservation on GLP-1: Protecting Lean Mass While Losing Fat
Any rapid weight loss puts lean mass at risk. On GLP-1 therapy, the leverage points are protein and training — not the medication.
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Protein Targets: The Single Most Impactful Nutrition Number
If a client only changed one nutrition variable, protein is the one I'd choose. Every time.
Apply this
Turn this education into a personalized plan.
Everything on this page is general education. The real leverage comes from applying it to your history, goals, and lifestyle. Start with our Health Assessment.