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