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