Analysis of illness: I am particularly afraid of cold in winter, and I don't wear much warmth. Besides yang deficiency, it may also be caused by deficiency of qi and blood, depression of yang and excess of yin.

Suggestions: People with yang deficiency are afraid of cold, especially the back and abdomen. In winter, their hands are cold over their elbows and their feet are cold over their knees. If it is indeed caused by yang deficiency, special attention should be paid to protecting the back and front abdomen. Eating Guifu Dihuang Pills properly, taking more exercise and eating beef and mutton in winter will help to improve yang deficiency.