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