Smart scales measure multiple metrics of body composition — not just your weight. Typically, they use bioelectrical impedance analysis (BIA), a noninvasive tool that evaluates your body composition by ...

The number on the scale does not tell the whole story. Your body weight does not account for your body fat, muscle mass and bone density, and will not tell how much of it is due to water retention or ...

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Body fat scales provide a rough estimate of your body composition based on your weight and other factors. However, research suggests that smart scales may not be fully accurate at measuring body fat.