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