Posing, poking out tongues and giggles are the tricks of the trade for the tots of a Wellington yoga class.

Adults sweat their way through some workouts at the Hot Yoga of New Zealand studio, in central Wellington, in a room heated to 40 degrees celsius.

But the heat is turned off on Wednesday afternoons for a class catering for three to seven-year-olds and the focus is firmly on fun.

Instructor Theresa Bowen, a former primary school teacher, said the 45-minute class was tailored for children, was not too strenuous and aided co-ordination, breathing, relaxation and balance.

"Kids love physicality. For the kids it's more play and it's just about getting into the poses and having fun and there's time for games. At the end of the class they're all quite focused.

"As soon as they get out, they're three-year-olds and five-year-olds. They get quite hyper again."

Sarah Tarquin, 5, liked to make up her own yoga poses and preferred to call the Warrior pose the Warrior Princess, according to her mother, Liz Tarquin.

"We go home and she does her demonstrations. There are about 104,000 yoga poses. There's 104,001 or more when the kids are involved."

Sarah said she liked the class because "we get to do my favourite poses".

Earlier she and the other children giggled as they tried a lion pose, which involved poking out their tongues and crossing their eyes.

The children's classes have been running since the studio opened in October. Parents said they believed it was the only studio in Wellington that offered children's classes.

Owner Claire Szabo-Cassella said people were never too young or old to start yoga.

"We don't feel that yoga is just for someone in their mid-50s to try. If they make it at 80, great. If they make it at eight, even better."