Because it was cold after hemorrhoid surgery, my ass was cold.

There are many reasons for being afraid of cold: people with iron deficiency have less heme, which affects the oxygen carrying capacity of blood and leads to the disorder of tissue energy metabolism, and people will feel extremely cold because of insufficient heat generated; People with low blood pressure have insufficient peripheral blood circulation, and human tissues cannot get enough oxygen and energy, and they are also afraid of cold; In addition, when the secretion of thyroxine in the body is insufficient, the blood circulation in the skin and other parts slows down, and the reaction to cold will be stronger when the heat is insufficient; The estrogen level in menopausal women is low, which affects the stability of nerves and blood vessels and is prone to chills in the waist, abdomen, hands and feet and the whole body.