The Body Age Calculator estimates how old your body is biologically compared to your actual chronological age. It considers factors like resting heart rate, body fat percentage, and activity level to determine your body’s overall fitness and vitality. A lower body age suggests a healthier cardiovascular system and better physical condition, while a higher body age may indicate reduced fitness or lifestyle habits that need improvement. This tool helps you understand how your daily activity, exercise, and nutrition affect your long-term health and physical aging.