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