No scale on the planet has the capability to actually measure your metabolism (RMR). Scales are very accurate at doing one thing only….measuring your weight. Some scales while weighing you accurately will also make a relatively inaccurate estimate of your body fat percentage by sending a small electric current through your hands or feet (bioelectronic impedance). Some scales will even go one step further and use that inaccurate body fat percentage to calculate a super inaccurate estimated resting metabolic rate. The only way to know your true RMR with accuracy is to actually have it measured. The PNOE metabolic gas analysis system used at Metabacheck has been studied and show to be equivalent to the gold standard laboratory state-of-art metabolic cart systems.