![How I Built This with Guy Raz show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/029/976/small/npr-series-world-cafe-next-from-wxpn-podcast.jpg)
Summary: Zumba began as a mistake: aerobics teacher Beto Perez brought the wrong music to class, then improvised a dance routine to go with it. For his students, it was more fun than work — and it eventually grew into one of the biggest fitness brands in the world.