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