Board Thread:Naruto Discussions/@comment-28861328-20140618060932/@comment-7862945-20140621195419

@Actionmanrandell No, it said it was a force of nature and that it's power is immeasurable. Also, the Sage said that people AMPLIFIED their chakra by mixing it with their physical and spiritual energy. Madara stated that people stole chakra.

From all the stuff said during the ten tails revival, it seems that Chakra is actually a separate energy. While it was said in the beginning that Chakra was the mix of physical and spiritual energy, later chapters considered physical energy a type of chakra and spirit energy as a type of chakra.

What was said in the beginning about chakra being a mix of spirit & physical energy might have been said because for as long as the shinobi could remember, They mixed their physical and spiritual chakra together. So their energies would have always have been mixed with chakra & wouldn't realize that it was a separate energy, because they'd have never had normal physical or spiritual energy.

It kept on saying that Chakra was "Given" or "Stolen". It hasn't been said that people "Created" it.