Nutrition
Bioimpedance Scale Body Composition
Bioimpedance scale body composition estimates fat and lean via electrical impedance—useful for trends at consistent hydration, not daily absolute precision.
Bioimpedance scale body composition sends a low electrical current through feet or hands to estimate fat mass, lean mass, and sometimes visceral fat index—fast but sensitive to hydration, meal timing, and calluses. Weigh at the same morning conditions for trend only; absolute percentages vary between brands.
Common questions
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Why does body fat percent jump overnight on BIA?
Fluid shifts from sodium, carbs, and training change impedance more than true fat. Track weekly averages at the same time, not post-workout sweats.
Related terms
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