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