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