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