By eHow Sports & Fitness Editor
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Step aerobics is a low impact exercise activity utilizing a bench or "step" ranging from 4 to 10 inches in height. Step aerobics routines incorporate a variety of moves creating an effective, interesting cardiovascular workout. The V-up (or V-step) is a basic move in which the feet, stepping wide, form the letter "V" on the bench.
eHow Sports & Fitness Editor