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