This document discusses body composition and ideal weights. It defines obesity and provides ideal body fat percentages for men and women. It notes issues with solely relying on height and weight charts, and recommends also considering body fat percentage and fitness level. The document discusses different methods for measuring body fat, such as skin fold tests and hydrostatic weighing. It defines Body Mass Index (BMI) and categories of risk. However, BMI may incorrectly classify some, like athletes. The document stresses that weight loss goals should target fat loss rather than just weight loss to preserve lean muscle mass.