Trends in the fitness world move as quickly as fast fashion. Prancercising, hula hooping, kangaroo jumping, flash mobs, and pounding have all had their moment. Even the traditional fitness mainstays, running, strength training, cycling and swimming, have had their fads and fusions. Whether it’s Tabata, HIIT, CrossFit, barefoot running, treadmill dancing, parkour, or aqua cycling, there’s always something new…