A brand that started quietly 25 years ago now has the trust of more than twelve million people.

In the early hours of the morning a colourful brigade of all ages is buzzing with anticipation. No caffeine is required, at this party the drug of choice is Zumba.

“It's an amazing feeling, just awesome," said Zumba Dancer Katie.

More stories from Today Tonight

• The eight minute workout
• Mythbusting exercise and diet
• Losing weight with the stars

According to Katie, Zumba is “a little baby in Australia, but we are growing at a rate of knots.”

To most of us, Zumba is best known for fluoro-inspired dance exercise DVDs, sold via infomercials on morning TV.

But in reality Zumba is so much bigger than that.

Zumba makes history

In Florida thousands of Zumba fitness instructors from around the world have assembled to take part in history.

It’s an event never attempted before, and it’s the very first look at the latest Zumba craze - Rock Star Zumba. With six thousand instructors dancing at once, you might think this is a fad, but to believers, it’s a religion.

The fanatical are here to learn from the master - Beto Perez. Beto is the man responsible for mixing Latin American dancing with a pump aerobics class to create Zumba.

“It is so easy to do, everybody can do it. In my class sometimes I have grandmothers, mothers and daughters. This is not for young people, not for old people, it's for everybody,” said Beto.

With ten million DVD sales, twelve million people have signed up in 125 countries, and there are more than 4000 instructors in Australia alone.

“It’s only in the last two years it's been in fashion, but I’ve done this for 25 years, and it get bigger and bigger,” said Beto.

However, not everyone is a fan. Some chiropractors in Australia claim there's been a spike in Zumba-fuelled injuries to hips, knees and ankles, due to the intensity of the dance movements, and warn for those who are not fit to not get carried away.

But for our instructors, getting people up on their feet can only be a good thing.

“The statistics are higher because more people are giving it a go. Because they don't have to go to the gym, they can dance and have fun, and they really push themselves. But the benefits of a Zumba class far outweigh all those injuries you can get on a beach or a football game,” said Australian instructor Katie.

In a franchise celebrating its tenth year, it's not surprising there are plans to push the boundaries once again.

“Next I want to do a movie, or a musical on Broadway, or Zumba circus,” says Beto.

“If you haven’t done it before, get off the couch and give it a go,” concluded Katie.