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