Wood is softer than mace, which will hurt when used. Massage the soles of your feet with a wooden roller will promote blood circulation. Generally speaking, body temperature is closely related to blood circulation. When the body temperature is low, the blood circulation is low, and when the body temperature is high, the blood circulation will be vigorous. Pedicure can improve the blood circulation of the foot and raise the skin temperature, thus promoting the blood circulation of the foot and the whole body; Improve heart function and reduce heart load.