General characteristics: yang deficiency, manifested as chills, cold hands and feet, etc. Physical characteristics: the muscles are soft and not firm. Common manifestations: always afraid of cold, lukewarm hands and feet, like eating hot food, listlessness, tender tongue and slow pulse. Psychological characteristics: how quiet and introverted. Incidence tendency: prone to phlegm, swelling, diarrhea and other diseases; Feeling evil is easy to get cold. Adaptability to the external environment: resistant to summer but not winter; Vulnerable to wind, cold and humidity.

Diet: Eat more foods with aphrodisiac function, such as mutton, pork, chicken, dog meat, hairtail, shrimp, walnuts and chestnuts.