ELI5: Explain Like I'm 5

Spermarche

Okay, so you know how boys and girls have different parts down there, right? Well, when boys grow up and start becoming men, their bodies start to change. One of the changes that happens is something called spermarche.

Spermarche is when a boy's body starts to make something called sperm. Sperm are little tiny things that can help make a baby. They come out of a boy's body when he ejaculates, which means when he releases them from his penis.

Spermarche usually happens when boys are around 12 or 13 years old, but it can happen a little earlier or later. It's part of growing up and becoming a man.

So, that's basically what spermarche is. It's when a boy's body starts making sperm so he can eventually have babies when he's older.
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