Before there was Zumba, step aerobics, or Jane Fonda's iconic "workout series," there was Jazzercise. Founded in 1969 by dance instructor Judi Sheppard Missett after she realized her students would rather look like dancers than actually be dancers, it remains a force to be reckoned with, as about 8,500 franchises operate across the world today. Karen Kilbane, the mother of journalist Brennan Kilbane, has run one of the company's most successful outlets for the past 33 years, and though she continues to oversee 22 classes per week, at age 63 she's decided to retire. “I’ve invested 33 years of my life in this business, and I want it to go on," she says. "And finding the right person to take it over is an important part of what I’ve invested all of these years."
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