Body Fat
Body fat percentage is the fraction of the total body mass that is adipose tissue. This index is often used as a means to monitor progress during a diet or as a measure of physical fitness for certain sports, such as body building. It is more accurate as a measure of health than body mass index (BMI) since it directly measures body composition and there are separate body fat guidelines for men and women. However, its popularity is less than BMI because most of the techniques used to measure body fat percentage require equipment and skills that are not readily available.