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