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