their sense of balance doesn’t change
their sense of balance gets better
their sense of balance gets worse
lungs
torso and head
stomach
legs and arms
zero gravity
regular gravity
microgravity
walking
interacting
eating
talking
sleeping sickness
migraines
motion sickness
food poisoning
hands
muscles
legs
brains
nothing, it stays the same
it swells with fluid before shrinking
it slows down
it speeds up