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