Men from throughout the city who have taken up the challenge to join Zumba classes and embrace a healthier, more active lifestyle are also having fun.
Tuesday night's 'Dudes are free' promotion saw men go through a door they never thought they would.
Community advisor for Hamilton City Council Trish Cree says it was been great to see typical Kiwi blokes brave the gaze of hordes of woman to join the fun, action-packed classes.
"They're having so much fun, they don't know they're working out. The men are adding a unique element to the class and it's awesome to see them."
Ian, a regular at Zumba since February, stumbled across the classes while riding his bike after work.