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