Constitutional characteristics: Emaciation, facial flush in the afternoon, dry mouth with scanty saliva, occasional vexation, feverish palms and soles, poor sleep, constipation, dark urine, dislike of spring and summer, preference to cold drink, thready and rapid pulse, red tongue with a little fur.

1. Regulating the mind
The people with yin deficiency are impetuous-natured, and often vexed and irascible. Accordingly, they should enhance self-control, argue less with others to avoid being enraged; they should participate less in the competitive recreational activities. Besides, it is also very important to moderate sexual life. Learn more information, please go on reading Definition of Constitution.

2. Regulating according to the environment
The people with yin deficiency fear heat but like cool. It is easy for them to spend the cold winter but hard to spend the summer heat. Thus, they should pay attention to the prevention of sunstroke. "Nourishing yin in autumn and winter" is more important for the people with yin deficiency, especially, the dry climate in autumn consumes yin more easily. The living environment should be quiet and it is the best to live in the house facing south. Learn more information, please go on reading Definition of Constitution.

3. Regulating the diet">Regulating the diet
The principle is to nourish yin and suppress yang. It is advisable to eat bland foods such as sesame, roundgrained nonglutinous rice, honey, milk products, sugarcane, vegetable, fruit, bean curd and fishes. Meanwhile, it is suitable to drink Gruel of Shashen (Radix Adenophorae), Gruel of Baihe (Bulbus Lilii), Gruel of Gouqizi (Fructus Lycii), Gruel of Sangshen (Fructus Mori) and Gruel of Shanyao (Rhizoma Dioscoreae). If the conditions permit, these people may eat edible bird's nest, tremella, sea cucumber, mussel, tortoise meat, crab meat, Chinese caterpillar fungus, and old male duck, etc. However, they should eat less pungent and hot-natured things like green Chinese onion, ginger, garlic, chives, macrostem onion and hot pepper. Learn more information, please go on reading Fructus Lycii (Gouqizi).

4. Physical training
The strenuous exercise is not advisable while Taijiquan, eight-section brocade, etc. are more suitable.

5. Life cultivation with drugs
Drugs of nourishing yin, clearing away heat, nourishing the liver and kidney may be selected such as Nüzhenzi (Fructus Ligustri Lucidi), Shanzhuyu (Fructus Corni), Wuweizi (Fructus Schisandrae), Hanliancao (Herba Ecliptae) , Maimendong (Radix Ophiopogonis), Tianmendong (Racliax Asparagi) , Huangjing (Rhizoma Polygonati) , Yuzhu (Rhizoma Polygonati Odorati), Xuanshen (Radix Scrophulariae), Gouqizi (Fructus Lycii), Sangshenzi (Fructus Mori) and Guiban (Carapax et Plastrum Testudinis). Constitution with yin deficiency can be further divided into constitution with deficiency of the kidney yin, constitution with deficiency of the liver yin, constitution with deficiency of the lung yin, constitution with deficiency of the heart yin, etc. Learn more information, please go on reading Radix Scrophulariae (Xuanshen).

For instance, in the case of deficiency of the lung yin, Baihe Gujin Decoction (Lily Decoction for Strengthening the Lung) is advisable; in the case of deficiency of the heart yin, Tianwang Buxin Decoction (Cardiotonic Decoction) is advisable; in the case of deficiency of the spleen yin, Shenrou Yangzhen Decoction is advisable; in the case of deficiency of the kidney yin, Liuwei Dihuang Pill (Bolus of Six Drugs In cluding Rehmanni) is advisable; in the case of deficiency of the liver yin, Yiguan Decoction (An Ever Effective Decoction for Nourishing the Liver and Kidney) is advisable.