Life After Microgravity: Astronauts Reflect on Post-Flight Recovery

Space changes you. It strengthens some muscles, weakens others, shifts fluids within your body, and realigns your sense of balance. NASA’s Human Research Program works to understand—and sometimes even counter—those changes so astronauts can thrive on future deep space missions. Astronauts aboard the International Space Station work out roughly two hours a day to protect […]

Published by NASA on 09/09/2025