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