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