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