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