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