After entering adolescence, it is necessary to give children some knowledge about physical health. Otherwise, once some girls have menarche, they will be frightened and at a loss, and take some unsanitary measures in private, causing physical harm; Once some boys have nocturnal emission, they don't know that this is a normal physiological phenomenon, thinking that they are "sick" and have unnecessary fear and anxiety. A mother should tell her daughter about physical health knowledge and let her know that the change of her body shape, the development of her breasts and the growth of pubic hair are all normal phenomena. Also tell him what menstruation is like, teach him how to use sanitary napkins correctly, and help her treat this natural development happily. Six months to one year after menarche, due to various factors, menstrual period often changes, which is not morbid. Generally speaking, as long as you keep a reasonable pace of life, you will gradually turn to normal. The above content is edited by Jiuzhen Culture. Please follow us for more information.