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