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Set up walking paths equipped with rails. It could look something like a walker, possibly with straps to hold you down, and tied into a rail system. Each time you take a step the walker and strap...
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#1: Attribution notice removed
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System
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2021-03-30T23:53:19Z (over 3 years ago)
Source: https://worldbuilding.stackexchange.com/a/109217 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/