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