Chí or "energy" - the basic premise of Feng Shui must be free-flowing in order to be in balance. All things in the Universe have two opposite yet complementary energies known as Yin and Yang.

All foods fall into three categories; yin foods, yang foods and neutral foods. The term yin or yang relates to whether a food is a cooling or a warming food. Do not be fooled by simple assumptions, as these terms often have nothing to do with the taste, or how it is cooked. They relate to deeper essences of the foods nature.
At a deeper level, each food relates to one or more Feng Shui Elements - wood, fire, earth, metal and water. By combining the elements, you can enhance the Yin and Yang components of food, saturating it with energy and health-giving properties. You will feel best when both - Yin and Yang energies are equally strong and balanced within your body.