Which method to assess body fat weighs a person on land and then again while submerged in water?

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Hydrodensitometry, also known as underwater weighing, is the method that weighs a person on land and then again while submerged in water to assess body fat. This is because lean tissue (muscle, bone, organs) is denser than water and fat tissue is less dense than water, so the difference in weight between the two measurements is used to calculate body density and ultimately body fat percentage.

Which Method to Assess Body Fat Weighs a Person on Land