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I just watched this video by Drew Feustel showing him having trouble walking upright after 197 days on ISS:

https://mobile.twitter.com/Astro_Feustel/status/1075889929119547393

They say once you have learned how to ride a bicycle you can never unlearn this skill (crossed hands excused)

It made me wonder: would people returning from space have to learn how to ride a bicycle the same way they have to learn how to walk again? What about hoverboards or Segways?

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The overwhelming majority of physical issues stemming from prolonged spaceflight are due to loss of muscle and bone mass. Astronauts typically make a full recovery shortly (few months) after their return to Earth's gravity well. Provided they have the physical strength to push the pedals and keep the bike upright, a returning astronaut shouldn't have any trouble riding a bike.

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  • $\begingroup$ But not immediately after landing. $\endgroup$
    – Uwe
    Commented Mar 23, 2020 at 15:52

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