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