Hydrostatic Weighing
One of the most accurate methods for calculating body fat is hydrostatic weighing. This technique sometimes referred to as underwater weighing or hydrodensitometry, your body's composition is calculated based on its density.
The Archimedes principle is the basis for hydrostatic underwater weighing. According to this principle, the volume of an object that is immersed in the liquid will be equal to the volume of the object. During the test, you will sit on a scale while being immersed in water. By comparing your land weight and underwater weight, an administrator will determine your body fat percentage. When an accurate measurement is required, hydrostatic weighing is frequently used on athletes, in research, and in other situations.