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