![]() ![]() ![]() When you stand on a body fat scale, the soles of your feet contact electrodes that send a small, harmless electrical current up your legs. How do body fat scales work?īody fat scales use a method called bioelectrical impedance to measure your body fat percentage. The principle behind this kind of body fat calculator is that electrical current travels differently through body fat and lean tissue because the resistance of these tissues to electrical current is not the same. Hunnes says that body fat percentage is a better indication of health and disease risk than BMI, which does not consider your body composition. “So a female who weighs 140 pounds will be carrying between 28–42 pounds of fat on body, and a male (whose healthy body fat percent range is around 11–20%) who weighs 180 pounds will be carrying 19–36 pounds of fat.”ĭr. ![]() Dana Ellis Hunnes, PhD, MPH, RD, who is a registered dietitian and the clinical director at UCLA Medical Center. “Most average individuals will have body fat percentages in a healthy range of between 20–30%, meaning of their total weight, 20–30% of that is fat mass,” explains Dr. Athletes who have a lot of muscle mass or a lean physique have a low body fat percentage and a higher relative proportion of lean bone mass (muscle, bone, nerves, organs, blood, etc.). What is body fat percentage, and why does it matter?īody fat percentage refers to the relative amount of your body weight that is composed of adipose tissue, or fat. ![]()
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