The exercise commonly known and referred to as "jumping jacks", which was invented by Missouri-born General John J. Pershing as a drill exercise for cadets when he was a tactical officer at West Point in the late 1800s, is selected for and shall be known as the official exercise of the state of Missouri.
Mo. Rev. Stat. § 10.115
Official state exercise — jumping jacks
Effective: 28 Aug 2014; (L. 2014 H.B. 1603)
Official source: Missouri Revisor of Statutes. Reproduced from public-domain Missouri statutes; confirm against the official source for the current text. Not legal advice.