Yang and hot type

Individuals have a sturdy body. They often feel hot, experience dryness of the mouth, prefer cold drinks when thirsty, have a reddish complexion, are easily annoyed, and tend to suffer from insomnia. They usually discharge scanty urine of a dark color, and have hard stools. Upon examination of the tongue, it appears red with a yellowish coating, or may have no coating at all. Such individuals are very sensitive to high temperatures.

Yin and cold type
Individuals have a frail body. They usually feel cold, have an aversion to wind, and their limbs are cold. They prefer hot or warm food and drinks, are reluctant to speak, get easily tired and have a pale or whitish complexion. They usually discharge clear urine frequently, stools are soft, and tend to suffer from diarrhea easily. Upon examination of the tongue, it appears pink and bulky with a whitish coating. Such individuals are very sensitive to cold temperatures.