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