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