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