Basic idea of Yin and Yang is about harmony and balance.
Power of Yin and Yang, are believed to affect everything in the universe, including us.
Traditionally, Yin means dark, passive, feminine, cold, and negative. While Yang is the light, active, male, warm, and positive.
Another simple way to see the Yin and Yang is with the two sides to everything, like happy and sad, tired and energetic, cold and heat.
Overall Yin and Yang have the opposite properties. They can not stand alone and must be complementary.
Everything and everyone has a difference in the levels of Yin and Yang. As seen in the symbol of Tai chi, Yin and Yang intertwined.
There's always a little Yin in Yang and vice versa, there is little in the Yin Yang.
In the universe, the sun and the fire is Yang, while earth and water are yin. Due to the existence of life and the role of collaboration between these two forces.
Yin and Yang likened to a candle. Yin is a candle, while Yang is fire.
Yin (wax) maintains and supports Yang (fire). Candle flame need for its existence.
Yin Yang consume and burn it up to a light. When the wax (Yin) runs out, then fire (Yang) will be lost at the same time.
So, Yin and Yang are interdependent on each other for their existence. You can not have just one of them. Body, mind, and emotions, all of them under the influence of Yin and Yang.
When two opposing forces in balance, we will feel we are good condition. But if one force dominates the other, then there is an imbalance that can lead to poor health.
The concept of Yin and Yang will be the same when compared to the concept tridosha in Ayurveda. If all dosha (Vata, Pitta, and Kapha) in balance, then your health will be perfect.
But, if there is an imbalance between the three dosha, then you will experience pain.
One purpose of acupuncture is to maintain the balance of yin and yang in the body of a person to prevent illness and recuperation.
Acupuncture is a therapy thing, because the move or working from outside the body. While herbal therapy and nutrition, is part of the Yin therapy, as it moves from inside the body to tissues throughout the body.
Yin and Yang are also part of the eight principles of traditional Chinese medicine. Other six principles are: cold and hot, internal and external, deficiency and excess.
These principles allow the practitioner to use Yin and Yang are more appropriate, especially in establishing the diagnosis.