Hydrodensitometry

Hydrodensitometry, also known as underwater weighing, is a method to measure body composition, specifically body fat and lean mass. It works by comparing your weight on land to your weight when submerged in water. Because fat tissue is less dense than water, a person with more body fat will weigh less underwater relative to their land weight. By calculating the difference, experts can determine your body density and estimate your percentage of body fat accurately. It's a precise technique often used in research and clinical settings to assess overall health and fitness.