why are girls so moody during there period

Many girls and women have uncomfortable and distracting menstrual cramps during their periods.

Some girls and women — from 20–50 percent — have a physical or emotional discomfort that’s known as premenstrual syndrome (PMS) about a week before menstruating, or during the first few days of menstruation. Symptoms of PMS include depression and other mood changes, appetite changes, backaches, difficulty breathing, fluid retention, headaches, irritability, insomnia, sweating, and tender breasts. PMS is more common in older women.

Most women find that exercising and getting plenty of sleep can help minimize the symptoms of PMS, and many also find that sexual arousal and orgasm may help relieve menstrual cramps.

Some women, by the way, report positive premenstrual changes, including increased creativity, energy, and sexual desire.