What's “Yin and Yang”
One of the concept of Chinese Medicine.
Some people say “Yin is Negative Yan is Positive.” It’s not described only that way.
The images of “YIN” are like
Ground, Moon,Water, Dark,Woman, Down, Cold,Soft,Flexible,Black,Sit,Sleep...
The images of “YAN” are like
Sky,Sun,Fire, Bright,Man,Up,Hot, Hard,Strong,White, Stand, Awake...
All Living life has a equal Yin and Yang energy basically. Those help each other with keeping balance.
If one of energy decreases or increases, you might become sick.
If one of energy would exhausted, it means to die.
Your body and mind are influenced each other.
As your mind gets clearer, your physical performance gets better.
Similar like the relationship of Soulmate.