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