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The postpubescent phase marks the completion of the physical and physiological changes associated with adolescence, leading to adult reproductive capability. This stage begins when pubic hair growth is finished, growth in height slows down, and primary and secondary sexual characteristics are largely developed.12

In males, this phase includes the development of facial hair, such as beards, and continued growth of the penis and testes. In females, further breast development may occur. While the major developmental changes are complete, fertility is established during this period. The timing and progression of these changes can vary significantly among individuals.3214

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