TIL that the treadmill was invented as a form of punishment for prisoners via /r/todayilearned


TIL that the treadmill was invented as a form of punishment for prisoners
http://ift.tt/2tYIsJ5

Submitted July 16, 2017 at 04:53PM by theverycuriousman
via reddit http://ift.tt/2tgpKj0

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