Board Thread:General Discussion/@comment-1875854-20150221232630/@comment-4961229-20150223034459

The only example of the mechanics of nature change we have is Naruto's wind training. Naruto did not appear to me to be altering yin / yang ratios. He was told to imagine his chakra rubbing against itself and being ground into fine pieces. This to me indicates that he's using his spiritual energy (imagination) to alter certain properties of his chakra, not it's ratio of yin and yang.