YIN and YANG PHILOSOPHY.

Yin and Yang are the oppositional balancing forces. The interrelation and mutual dependence of Dark Yin and Light Yang are represented in all traditional chinese philosophy.
Yang energy, hard, strong, assertive, initiating male force, encompasses everything. The images of a bright fire, the sun, the exterior and the upper of these expanding Yang energy demonstrate the power that it compels. Yang makes all the strength and power of heaven available to you through your own initiative and spiritual progress. It helps you to lead, act, impel, move, in other words it means "to do."
Yin is the balancing principle to Yang. Yin represent water, moon, lower, inner, female, dark, soft, moist. It is the earth below heaven, darkness illuminated by light, an ear filled with talk.
Yin energy provides the fertile ground for the initiative impulses of the universe. It enables you to assist, to follow, to complete, to listen, to renounce agendas, and receive answers. Yin spreads your nurture, so power will come to your open arms, in other words it means "to be."
Based on the idea that the universe is dualistic by nature. Yin and Yang resonate together. When one of them is out of balance, clashes and conflicts arise.
The chinese philosophy holds that you can balance your Yin-Yang energy with the food you eat in terms of emotionally and physical background. The first step is to assess your own personal balance of Yin-Yang energy. Then you will find out which spiritual and physical foods you need to rebalance. Yin foods can cool you down and help you to relax. When you have too much watery Yin energy your body feels damp or depleted. In the other hand, when your body feel too warm, dry, or congested indicates excess of the fiery Yang energy.

In Psalm 69, written by David, he describes the lack of balance of his own nature by these words:
"Save me, O God! For the waters (Yin energy) have come up to my neck. I sink in deep mire, where there is no foothold; I have come into deep waters, and the flood sweeps over me. I am weary with my crying; my throat is parched. My eyes grow dim with waiting for my God.
More in numbers than the hairs of my head are those who hate me without cause; mighty are those who would destroy me, those who attack me with lies. What I did not steal must I now restore?
Oh God, You know my folly; the wrongs I have done are not hidden from you. Let not those who hope in You be put to shame through me, O Lord of hosts; let not those who seek You be brought to dishonor through me, O God of Israel. Psalm 69: 1-6.

Yin and Yang as opposing forces keep the world in balance. The whole range of ingredients that nature provides promote the equilibrium and the holistic nourishment of mind body and spirit.