As part of its continued promotional campaign, YouTube did its own “12 Days of Christmas” video, which included a “9 Dancers dancing” verse with two options: Prancercise: A Fitness Workout, and Evolution of [Football] End Zone Dancing. The former was 5 minutes of a slender, fit woman with ankle weights hopping through a park. You can see that this is good exercise.

The latter was two slender, fit guys in football jerseys—actually Jimmy Fallon and Justin Timberlake– hamming it up. Some exercise for those two. But end zone dancing in football gear is done by a tiny fraction of folks, while the vast majority are sitting and watching TV. No exercise here.