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