A body fat and hydration monitor scale is a type of bathroom scale that measures not only your weight but also provides additional metrics such as body fat percentage and hydration level. These scales typically work by sending a small electrical current through your body and measuring the resistance encountered, which can help estimate your body composition. When using a body fat and hydration monitor scale, it's essential to remember that these measurements are estimates and may not always be entirely accurate. Factors such as hydration level, recent exercise, and food intake can all affect the readings. However, these scales can still be valuable tools for tracking changes in your body composition over time and monitoring your overall health and fitness goals.