I haven't read the article yet, but most organized sports for kids are team things where technical skill is highly necessary. Most of these are not sports you see adults playing in later life, i.e. soccer, baseball, football, ice hockey, gymnastics. I sucked at that kind of stuff as a kid, and while they didn't have much for girls when I was child in terms of team sports, we did do this stuff in PE. The one thing I consistantly did was ride my bike and play in the woods.My own kids did baseball and soccer. The oldest was great at baseball, but quit after 6th grade. Music became his "sport," specifically marching band. The other one was terrible at baseball, OK at soccer, quit both in gr. 5. He started running competitively in gr.7, mountain biking in gr. 8, and competitive road cycling in gr.9. He is really a superior athlete, to this day, but you never would have known it from the team sports. The cycling stuff was all done outside of school and a lot of work for him and us, but he loved it. I think the suffering aspect helped him in the military! The other one is also a very good endurance (cycling and running) athlete, and none of that was apparent as a child. He was a good swimmer then, but never competed. He also kayaked at camp and got quite good.