Olympic gymnast Louis Smith and singer Jade Ewen have pledged support to Zumba Fitness's global charity initiative, The Great Calorie Drive which asks participants to use a free smartphone app to 'donate calories' to the World Food Programme when they attend Zumba classes between April and June.

Zumba will donate the equivalent of the average amount of calories burned per class to the WFP, with hopes of 2.6 billion calories donated, equating to 3.5 million meals.