Answer:
Sheldon classified people according to three body types or somatotypes: endomorphs, who are rounded and soft, were said to have a tendency toward a "viscerotonic" personality (i.e relaxed, comfortable, extroverted) mesomorphs, who are square and muscular, were said to have a tendency toward a "somotonic" personlity (i.e. active, dynamic, assertive, aggressive) and ectomorphs, who are thin and fine-boned, were said to have a tendency toward a "cerebrotonic" personality (i.e. introverted, thoughtful, inhibited and sensitive.)
Explanation:
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