Smart scales are easy to use. You simply step on the scale, and the tool measures both your body weight and your estimated fat percentage.
Smart scales use WiFi or Bluetooth to sync up with your smartphone, allowing you to record and track measurements such as your weight, body-fat percentage, and more. It’s a pretty cool technology that can help you work toward your health goals.
Such scales work with the help of sensors underneath your feet that use bioelectrical impedance. When you step on the scale, a small electrical current runs up through your leg and across your pelvis, measuring the amount of resistance from body fat.
Then, the sensors in the scale measure the level of resistance that the current met as it travels back through your other leg.
Depending on the type of body fat scale you have, the information can link up to your smartphone or smartwatch, as well as any fitness apps you might have.
As a rule of thumb, greater body resistance means a higher fat percentage. This is due to the fact that fat contains less water than muscle, so it’s denser than muscle and more difficult for a current to travel through.