In everyday life, knowing and monitoring your body composition (muscle mass, fat mass, water, etc.) is certainly a fundamental aspect for maintaining good health and leading a healthy lifestyle. WHAT IS BIOELETTRIC IMPEDANCE ANALYSIS (BIA). Bioelectrical Impedance Analysis (BIA) provides a detailed description of body composition. The tissues of our body, muscles, fat and bones conduct current differently, being characterized by their own specific impedance (force that the body opposes to the passage of a very small and high-frequency alternating current). BIA evaluates the impedance of the various components of our body, measuring lean body mass and body fat through the evaluation of body water. It is a rapid, non-invasive, operator-independent method and therefore repeatable and comparable.