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