Menstruation is a natural process that occurs in females as a part of their reproductive system. It is a monthly process of shedding the uterine lining on a regular basis. Here are some key points to understand menstruation:

• Menstruation is a part of the menstrual cycle, which is controlled by female hormones that cause regular bleeding (periods) .
• The menstrual cycle has four phases: menstruation, the follicular phase, ovulation, and the luteal phase.
• Menstruation occurs when the uterus lining sheds and flows out of the vagina. It usually lasts for 3 to 7 days.
• Menstruation happens because of changes in hormones in the body. Hormones cause the lining of the uterus to build up, which gets the uterus ready for an egg and sperm to attach and grow into a baby. If the woman does not get pregnant, the lining breaks down and bleeds. This same process happens every month.
• Menstruation generally starts between the ages of 8 and 15 years and continues until menopause, which is around age 45-55.
• Menstrual blood is a mixture of blood, mucus, and some cells from the lining of the uterus. Although it may look like a lot of blood, a girl usually only loses a few tablespoons of blood for the whole period.
• Most girls use a pad when they first get their period. Pads are made of cotton and come in lots of different sizes and shapes. They have sticky strips that attach to the underwear. Some girls prefer a menstrual cup. To use a menstrual cup, a girl inserts it into her vagina. The cup holds the blood until she empties it.
• PMS (premenstrual syndrome) is when a girl has emotional and physical symptoms before or during her period.

It is important to understand that menstruation is a natural process and not something to be ashamed of. Girls should be educated about menstruation and how to manage it properly. They should also be encouraged to talk to their parents, teachers, or doctors if they have any questions or concerns.