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Step aerobics, also known as bench aerobics and step training, is a form of aerobic exercise that involves stepping on and off a small platform. Step aerobics was studied by physiologists in the 1980s, and in 1990 it swiftly grew in popularity in the U.S. as a style of health club exercise, largely because of promotion by Reebok of the Step Reebok device and associated exercise routines, prominent... Wikipedia