They’re used to that, as they do that while in space, too. https://www.nasa.gov/humans-in-space/counteracting-bone-and-muscle-loss-in-microgravity/ https://www

They’re used to that, as they do that while in space, too. https://www.nasa.gov/humans-in-space/counteracting-bone-and-muscle-loss-in-microgravity/ https://www.nasa.gov/humans-in-space/counteracting-bone-and-...: “Each astronaut aboard the space station engages the muscles, bones, and other connective tissues that comprise their musculoskeletal systems using Earth-like exercise regimens. Crews exercise for an average of two hours a day.”