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