Sales of the fitness videos, which have been around for more than a decade, really took off in August when Republican running mate Paul Ryan announced that P90X was his favorite exercise routine.

Power 90 followed, along with P90X, P90X2, P90X3, 10 Minute Trainer ... balance and range of motion above all else when it comes to his fitness plan. “In this industry, especially for men, it’s a lot ...