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