I really like to have fun when I exercise, which is why I’m a big fan of Zumba fitness classes. Lately my enthusiasm for the program has escalated to obsessive levels. I blame it on the clothes.

SAGINAW TWP. — A new fitness craze called “Zumba” isn’t just good for toning bodies. The Latin-based aerobic dance workout is boosting attendance and profits for many fitness centers, gyms and ...