Bioelectrical Impedance Analysis (BIA) definition

A method of estimating percent body fat by measuring the ease at which a safe and small electrical current travels through your body.

This method is commonly used in bathroom scales and handheld devices that measure percent body fat.

Because water is a good conductor of electricity, the current travels easily through parts of your body composed mostly of water (muscle) and less easily through fat.

The slower the current travels, the more body fat you are estimated to have.

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