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