The document provides advice on determining if a person is overweight or not. It discusses several factors to consider: age and the related hormone regulation that can affect body shape; whether a person carries more weight in an "apple shape" around the waist or a "pear shape"; a person's BMI and the health risks associated with a BMI over 25; the number of hours spent on exercise as heavy muscle mass could account for extra weight; and the role of genes, as siblings eating the same diet may have different weights due to genetics. The document recommends exercising within one's abilities and maintaining a healthy diet as the best choices for health.