Originally Posted by kael03
It was explained in the beginning when a ninja's chakra reaches 0 they die. I guess its because chakra has been so ingrained in their biology they can't survive without it now.
I know they die if chakra reaches zero, but the point I'm trying to make is how did they live without chakra before the received it from the juubi. They must have had some natural chakra to live on. The manga states that a princess received god like power and was the first person to USE chakra doesn't exactly mean people didn't have a sufficient amount to live. I guess sage just taught them how to use it or distributed extra chakras among people.