It is a normal physiological phenomenon for women to be weak and sleepy during menstruation. Because the nature of menstrual bleeding in women is caused by the cyclical shedding of the endometrium, there is a lot of shedding of the endometrium and a lot of bleeding at this time, and the loss of a lot of blood in the body will cause weakness and a certain degree of drowsiness, so most women during menstruation will have a significantly worse mental and physical state. So at this time, you must pay attention to rest, do not exercise strenuously, do not get cold, to avoid the external environment to aggravate the symptoms of the body. During the menstrual period, you can drink motherwort granules, which can effectively promote the shedding of the endometrium, and you can also use blood-supplementing food or medicine, which can help to improve the symptoms of drowsiness and weakness that appear in the body now.