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