“I will do different choreographies in each class down the line,” she said.

Peretti is glad to see a lot of older dancers try Zumba.

“I mean, that’s phenomenal,” she said. “How many women have that in them — want to dance, want to shake it, you know. ... Where else can you feel the music and move?”

And although Friday’s class was supercharged with estrogen, Peretti hopes to see men join the class and move it, move it.

Currently, the YMCA offers Zumba three times a week: Wednesday from 7 to 7:45 p.m., Thursday from 5:15 to 6 p.m. and Friday from 9:30 to 10:15 a.m.