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