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