At some point in the not too distant past some trainer in a long forgotten facility had the idea of laying a ladder down on the ground and hopping between the rungs as a way of increasing agility. In the years since the agility ladder (sometimes called a “speed ladder”) has evolved into a distinct piece of workout gear that has nothing to do with climbing and everything to do with increasing endurance and the ability to stay light and nimble on your feet. Today’s agility ladders are ladders in name only. Their primary purpose is to delineate rectangular areas on the ground which you then hop into and out of in various sequences at various speeds to work different muscle groups and increase your rate of physical responsiveness.\r