It is still relatively accurate, and it is best to weigh it on an empty stomach. At present, the strength of intelligent electronic scales is measurable physical indicators, such as weight and body fat percentage. Basic metabolic rate, estimated bone mass, muscle mass and other data, are these data charts and measurements? In fact, the intelligent electronic scale uses bioelectrical impedance technology to add ITO conductive film or conductive metal sheet to the surface of the scale. When a person steps on it barefoot, a closed-loop electrode will be formed. Because fat is non-conductive and water is conductive, the fat content in the body can be calculated by calculating the current value, resistance value and weight. So in other words, to measure the fat rate, you must walk barefoot.