The cold body, i.e., yin biased quality, has the hazards of being prone to frostbite in winter, easily fatigued, and susceptible to dampness stagnation, edema, phlegm (a pathological product formed as a result of impaired metabolism of water and fluid), blood stasis, and other pathologies. The yin biased quality is a body type characterized by inhibition, a preference for quietness, and a preference for cold. Physical characteristics are moderate or fat, easy to fatigue; pale and lack of Hua; small amount of food; usually fear cold and like heat; introverted, like quiet and little movement, or timid and easy to frighten; energy is weak, slow movement, slower reaction, weak libido. People with this physical characteristics, yang is weak, after the onset of the evil mostly manifested as cold, deficiency evidence; easy to get frostbite in winter; internal injuries and miscellaneous diseases are mostly seen in the evidence of yin, yang deficiency; easy to wet stagnation, edema, phlegm, blood stasis and other diseases. It is recommended that people who favor yin quality should be regulated under the guidance of a doctor.