What is the somatotype classification system and its relevance today?
The somatotype classification system, developed by William Sheldon in the 1940s, categorizes people into ectomorphs, mesomorphs, and endomorphs. Despite its historical significance, the system is based on a discredited theory that links body type to personality, and its relevance in fitness culture is largely outdated. It does, however, hint at real biological variations in metabolism and body composition.
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This is one answer. The complete system — the psychology, the biology, and the method — is in the book.
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