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