This document discusses lifestyle, weight management, and their relationship. It defines lifestyle as the way people live and choices they make, and weight management as practices to maintain a healthy weight through diet, exercise and energy balance. It then classifies weight ranges as underweight, normal, overweight and obese. Methods to determine weight classification like body mass index and waist circumference are provided. The relationship between lifestyle habits like eating patterns and weight is explored, with examples of common Filipino eating habits. Performance targets for fitness tests by age and gender are also listed.