In the US, the problem is not one of limitation but the lack of limits. People work hard and then play hard. They can go anywhere, do anything, have anything that their credit allows… They are also physically and emotionally, living beyond their energetic means… Forever engaged in yang activities, there is neither the commitment nor knowledge of how to nourish the yin which is necessary to the rebuilding of true or zhen yang.

“Insights of a senior acupuncturists.” Miriam Lee. Blue Poppy Press. 1992. Pg. 38.