Zumba. A worldwide craze!

When a fitness instructor from Colombia forgot to take the right cassette for his aerobics class, Zumba was created. Alberto Perez had a tape with dance music that he had recorded from the radio based on salsa and merengue rhythms. So, he improvised an exercise routine to that and, as a result, a new fitness concept was born by accident: Zumba! He created a global community of fitness instructors who teach Zumba Fitness Party and his company is worth millions. But life was not always easy for him. He was raised by a single mother and he had to work three jobs to support his family and his mother when she was seriously injured. Even after he had invented Zumba, it wasn't an easy task to convince instructors of its potentials.
Have you tried Zumba? How important is it to keep fit nowadays?