Passage: The gymnastic system was mentioned in works by ancient authors, such as Homer, Aristotle, and Plato. It included many disciplines that would later become separate sports, such as swimming, racing, wrestling, boxing, and riding, and was also used for military training. In its present form, gymnastics evolved in Bohemia and what is now (Germany) at the beginning of the 19th century, and the term "artistic gymnastics" was introduced at the same time to distinguish free styles from the ones used by the military. The German educator Friedrich Ludwig Jahn, who was known as the father of gymnastics, invented several apparatus, including the horizontal bar and parallel bars, which are used to this day. Two of the first gymnastics clubs were Turnvereins and Sokols.

Question: what sports used to be included in gymnastics?
swimming, racing, wrestling, boxing, and riding