Why do my hands turn red when the weather is cold?

Choosing warm food or medicinal materials for tonic in winter can make the body's blood circulation smooth and qi and blood active, which can achieve the effect of keeping out the cold. Foods with warming function are generally red and sweet foods, or spicy condiments and foods. These foods have the functions of warming, nourishing and promoting metabolism. Warm food suitable for winter.

Suggestion: It is caused by vasoconstriction, ischemia and hypoxia in winter. It is suggested to strengthen physical exercise, pay attention to nutrition, and there will be no more demands for limbs under more activities in winter.

(I hope to adopt it, thank you)