General

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In-line skating requires good balance and speed control; as a result, it is not a skill easily or quickly acquired, especially by young children. In-line skating also requires judgment and the ability to avoid obstacles, such as bicyclists, pedestrians, and other skaters.

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Good aerobic exercise. Inline skating burns more calories than bicycle riding and almost as many as jogging

According to the National Sporting Good Association (NSGA), 13.1 million people participated in in-line skating in 2006. The International In-Line Skating Association puts the number higher, at almost 30 million; half of them under the age of 14. Inline skating was the fastest-growing sport in the 90's. Half of all inline skaters were under the age of 18.