colleges have decided they want balanced students who have some of everything (except free time, because lmao they dont need that). so its karate or swimming oe soccer or football or baseball for athleticism, usually 2 during childhood. its piano or violin. its starting extra language study early. boy scouts or national honor society for leadership. speech and debate, model un or working for a campaign to show political consciousness. 100+ nonprofit work (actually documented) or starting your own of you want to stand out.
all these can be fun but as a kid you are not doing them to have fun, there is constant pressure to win awards and be the best at these. and the list is picked more from appearance on a college application than enjoyment for a child.
this is most american kids now with any ambition of getting into a prestigious school. it will not get you scholarships though.
it is also not mentioning that "academic excellence" in high school has moved from straight As to 6-8 AP exams in a single year, i shit you not.