The lack of gravity astronauts encounter during spaceflight makes returning to the force of Earth's gravity a little disorienting. And when they return to Earth, they faint.
원문출처 : https://www.cnn.com/2019/07/19/health/astronaut-exercise-iv-faint-scn/index.html
원문출처 : https://www.cnn.com/2019/07/19/health/astronaut-exercise-iv-faint-scn/index.html