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