It’s just after 10:30 on a morning in early June at a beige strip mall in Oceanside, Calif., and Judi Sheppard Missett, 78, the founder and chief executive officer of Jazzercise Inc., is dancing her butt off. From her raised platform, Missett enthusiastically calls out directions and words of encouragement, her voice projected through speakers. Dozens in the brightly lit studio follow, pivoting, shaking, swerving, and sweating. An hour earlier, Missett’s daughter, Shanna Missett Nelson, was teaching her own fitness class, with a guest appearance on the platform by her own daughter Skyla, their affirmations busting through a nonstop playlist of pop anthems. Read the full article on Bloomberg.