How old is a 13 year old?

Answer:
In Jewish tradition, a 13-year-old is old enough for a Bar or Bat Mitzvah -- a ceremony that means that they have become an adult.
Most 13-year-olds have started puberty: the cascade of physiological changes that change a person into an adult.
Legally (in most countries) a 13-year-old is still a minor, with limited rights.
First answer by HorseyLuvr. Last edit by JeffinMInneapolis. Contributor trust: 271 [recommend contributor recommended]. Question popularity: 1 [recommend question].