Fatty tissue is specific to the amount of fat contained in adipose tissue throughout the body. Subcutaneous fat is the fat contained in adipose tissue found between the skin and skeletal muscle. It is the fat that can be pinched at every part of the body. Internal fat is the fat contained in adipose tissue on the inside of the body. It s the fatty tissue that surrounds all of the internal organs of the body.
Lean tissue refers all other tissues of the body other than fatty tissue.
Those tissues include hair, skin, organs, muscle, bone, etc. In other words, it is anything not considered to be fatty tissue. The importance of body composition is not so much in determining a person s exact percentage of body fat or amount of lean body tissue. It is more in using body composition to assist individuals in evaluating the effects of exercise and diet on the amount of body fat being lost. For example, a female felt she looked too fat and wanted to lose some fat.