Sir William Cubitt invented the original treadmill in 1818 not as a piece of cardiovascular exercise equipment, but as a grueling torture device to punish lazy prisoners in British jails.

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Sir William Cubitt invented the original treadmill in 1818 not as a piece of cardiovascular exercise equipment, but as a grueling torture device to punish lazy prisoners in British jails. Inmates were forced to step on a giant wooden wheel with twenty-four spokes, relentlessly climbing a never-ending staircase for up to ten hours a day just to crush grain or pump water. The physical exertion was so brutally intense that it frequently caused severe injuries, exhaustion, and widespread panic among the prison population, eventually leading the government to ban it for being excessively cruel. Over a century later, the fitness industry took this banned instrument of horrific Victorian torture, slapped a digital heart rate monitor on it, and started charging millennials thirty dollars a month to run on it voluntarily. It is the ultimate proof that modern diet culture is literally grounded in nineteenth-century penal suffering