BF% (Body Fat Percentage)

Definition

The proportion of your body composed of fat tissue—a more useful metric than BMI, though measuring it accurately requires methods more complicated than looking in a mirror.

Example Usage

At 15% body fat, he was lean but still had visible abs.

Origin

Measurement methodology developed throughout 20th-century exercise physiology

Fun Fact

Body fat percentage varies more accurately than weight because muscle is denser than fat; two people can weigh the same but look completely different.

Source: Exercise Physiology and Body Composition Research

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