One day Beto forgot his dance class tapes and improvised, using his eclectic collection of Salsa and Merengue songs. It was a life changing moment that turned a simple dance class into a global exercise phenomenon, In just a few years Zumba® fitness has sold over 4 million DVDs and there are now more than 50,000 trained instructors in 75 countries. Six million people do a Zumba® class every week!