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