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