BIA (bioelectrical impedance analysis)

Bioelectrical Impedance Analysis (BIA) is a method used to estimate body composition, particularly body fat and muscle mass. It works by sending a small, safe electrical current through the body via electrodes. Because different tissues conduct electricity differently—muscle conducts better than fat—the device measures how quickly the current travels. These measurements are then used in a formula to calculate the proportions of fat, muscle, and water in your body. BIA is quick, non-invasive, and convenient, making it useful for tracking health and fitness changes over time.