Do you find that the male body grows after the age of 18 ?

I look at men in their 20's and they all look a lot bigger in every sense. They are more filled out, got wider shoulder, a lot bigger hands, the genitals also look on average bigger. Why have I been taught in school that the male body stops at 18 when half of us look like we have growth problems? Do you we really stop growth at around 18 ? Its strange as I've been told I look much older than I am but my bones are lean and I'm not as large in mass. Can any men tell me if there still is growth. Cuz I've heard that the brain doesn't stop growth till the age of 25 so do we have some sort of correlation with our physical structure?
Do you find that the male body grows after the age of 18 ?
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