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