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Data

Browse 1 article about data on LiftStrong. Evidence-based training and nutrition advice to help you get stronger and build muscle.

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Muscle Building

Average Bicep Size by Age, Height, and Gender (With Charts)

Real data on average arm measurements from the CDC and NHANES, what those numbers actually mean for lifters, and when to stop comparing yourself to charts.

9 min·Jeff·Feb 8, 2026

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