Cold diseases: a term in traditional Chinese medicine referring to cold symptoms after the human body is infected by pathogenic cold or when vital qi is diminished. The symptoms include pale face, aversion to cold, cold limbs, thirst for hot drinks, foamy saliva, stomachache desire for warm massage, diarrhea, lengthy urine, and white coating on the tongue. If you are hit by a cold pathogen, your pulse will be slow and tense. If this is because of deficient yang qi, your pulse will be deep.

1. The heavenly qi is not sufficient in the northwest which is yin. A person's right ear and eye are not as sharp as his left ear and eye. There are mountain ranges in the northwest and it is rather cold. This is yin without sufficient heavenly qi.
2. The southeast is thought to be yang and the climate is rather hot. Since it faces the sea, there is a saying that "land does not fill up he utheast."
There is insufficient earthly qi in the southeast, so it is yang. A person's left hand and foot is not as strong as his right hand and foot.

If we compare yin and yang to the earth and heaven, then the perspiration caused by yang qi is like the rain falling from heaven.
The yang qi on the human body is like the strong wind on earth.    
The rage of a person is similar to thunder.
The reverse qi is like the hot sun.
So when a person takes care of his health, he should do it as the earth and heaven operate. Otherwise, he will come down with disease. More information, please click to learn Chinese herbal formula--Female Tonic pills.