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