Judi Sheppard Missett of Jazzercise: “We need to get the 80 percent of adult men and women and adolescent boys and girls who don’t exercise to put down their phones, turn off their TVs, get up off their couches, and move!”

In the 1970s, the American women’s movement had gained widespread traction with the idea that a woman was entitled to take a bit of time off from her regular duties to “do something for yourself.” For many women, 55 minutes of Jazzercise twice a week was that gateway “something.” They came, they had fun, they looked great, and felt great afterward. They invited their friends and the idea, the movement of fitness for women took off, taking us viral before anyone knew what “going viral” was. If our communal experience could inspire a new movement in the 2020s, it would be to get the 80 percent of adult men and women and adolescent boys and girls who don’t exercise to put…