How gyms started as a patriotic scheme and became an entrepreneurial one
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Sources:
Ellison, Stephanie. “Americans gyms: A brief history — Stephanie Ellison.” Stephanie Ellison, 8 February 2020, https://www.stephanieellison.com/stuff/why-we-love-fitness-clubs-a-brief-history-of-gyms.
Heffernan, Conor. “The History of How the Modern Day Gym Came to Be.” BarBend, 27 July 2023, https://barbend.com/history-of-the-gym/.
Spector, Dave. “History of Gyms in the United States.” Historycentral, https://www.historycentral.com/BookReviews/Gyms.html.
