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