[gamblor956]

Up to college, cheerleading is a serious sport (see, e.g., the Netflix docudrama or even the old movie Bring it On which is surprisingly accurate).

It is one of the most physically demanding sports, and in terms of injuries it is the most hazardous sport for competitive athletes. It's basically gymnastics, but faster, with a dozen or more other people within the same limited space, and people are getting tossed around or jumping off other people, or balancing on top of one or more other people who may themselves be balanced on top of other people.