A Body Composition Monitor is a device that measures various components of the body, including fat, muscle, water, and bone mass. It typically uses bioelectrical impedance analysis (BIA) to estimate these values by sending a small electrical current through the body. This information helps individuals understand their overall health and fitness levels. These monitors are often found in scales or handheld devices and can be used at home or in fitness centers. By tracking changes in body composition over time, users can set and achieve health goals, such as weight loss or muscle gain, more effectively.