WHENEVER I GET near a barre for ballet-based training, my brain reverts to 8 years old. It thinks I know all the moves from childhood ballet classes, so the class won’t be hard. The truth is, I’m an ...

For many people, dance feels more like play than exercise, which helps to explain its enduring appeal as a workout. What began as “aerobic dancing” in the 1970s has evolved with exercise science (and ...