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