> In space, legs are not required. Maybe not a hard requirement, but they are very useful. Scott Kelly talks about the hard callouses he had on his feet becaus

> In space, legs are not required. Maybe not a hard requirement, but they are very useful. Scott Kelly talks about the hard callouses he had on his feet because you end up using your feet to navigate and hook yourself into place a lot. https://www.businessinsider.com/scott-kelly-weirdest-thing-year-in-space-2016-2 https://www.businessinsider.com/scott-kelly-weirdest-thing-y...