How a year in space changes your body and brain?

A year in space is like being on a super long, bumpy ride that changes how your body and brain feel and work.

Your body becomes like a stretched-out balloon. On Earth, gravity pulls you down, but in space, there’s no pull, so your bones get lighter and your muscles don’t have to work as hard. It's like if you stopped playing on the playground for a whole year; your legs would feel wobbly when you started again.

Your brain is like a map that gets remade. When astronauts float around, their brains learn new ways to move and think. They might get dizzy or have trouble focusing at first, it’s like learning to ride a bike with no handlebars!

When astronauts return to Earth, their bodies feel like they're walking through mud after a rainstorm. Their bones are weaker, and their muscles need time to remember how to be strong again. But with exercise and patience, everything gets better, just like after a long vacation!