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