Jazzercise is a fitness industry that combines dance, strength training, and cardio exercises to create a fun and effective workout. The company was founded in 1969 by Judi Sheppard Missett and has since grown to become a global phenomenon with over 8,500 franchises in 25 countries. Jazzercise classes typically last for an hour and are led by certified instructors who guide participants through a series of choreographed dance routines set to upbeat music. The routines are designed to work out every part of the body, from the arms and legs to the core and back. Jazzercise is a great way to improve cardiovascular health, build strength and endurance, and burn calories.