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