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