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