A Body Fat Scale is a bathroom scale that not only measures your weight but also estimates your body fat percentage. It uses a technology called bioelectrical impedance, which sends a small electrical current through your body. By measuring how quickly the current travels, the scale can determine how much fat, muscle, and water you have in your body. These scales are popular for people looking to track their fitness progress, as they provide more information than just weight alone. Many models also connect to apps on your smartphone, allowing you to monitor changes over time and set fitness goals.