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