Somatotype is a term used in physical education to describe the shape and composition of the human body. It is a classification system that divides body types into three generalized divisions: endomorph, mesomorph, and ectomorph. Most people are unique combinations of the three body types. The somatotype classification system was developed by William Sheldon, a psychologist from the United States, in the early 20th century. He based his classification system upon embryology and the three germ layers of the embryo, including the endoderm, the mesoderm, and the ectoderm. From these three germ cell layers, Sheldon developed the theory of somatotypes.

The three somatotypes are defined as follows:

• Endomorph: This body type is characterized by a higher percentage of body fat, a rounder physique, and a slower metabolism. Endomorphs tend to gain weight easily and have a harder time losing it.

• Mesomorph: This body type is characterized by a medium frame and bone structure, lean muscular body mass, and a naturally athletic body type. Mesomorphs have a predisposition to building muscle and respond quickly to training.

• Ectomorph: This body type is characterized by a slim, linear physique, a fast metabolism, and a difficulty gaining weight. Ectomorphs are well-suited for sports requiring speed and...