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