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