The treadmill’s dark and twisted past – Conor Heffernan

查看完整课程: 在家DIY的最佳美甲://ed.ted.com/lessons/the-treadmill-s-dark-and-twisted-past-conor-heffernan

The constant thud underneath your feet. The constrained space. The monotony of going nowhere fast. Running on a treadmill can certainly feel like torture, but did you know it was originally used for that very purpose? Conor Heffernan details the dark and twisted history of the treadmill.

Lesson by Conor Heffernan, animation by Yukai Du.