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