This is an article that explains four common faults in the running mechanics of children. It also included tips on how to have young athletes practice running to develop their mechanics and speed. This article relates well to what we talked about in class about proficiency in running. It goes over arm mechanics and how they can lead to a lot of wasted motion and inefficiency in running, and it points out other common flaws that were not covered in class, like overstriding. This article is important because running with poor mechanics for an extended period of time will usually lead to injury of some sort, and so it is important to form good habits with children so they can avoid injury in activities.