It is best not to eat chocolate when you have your period because although chocolate can relieve fatigue, it can put people in a state of euphoria. When menstruation, due to the decrease in physical fitness and resistance, often cause insomnia, and then eat chocolate will be in a more excited state and aggravate insomnia, so it is not recommended to eat chocolate when menstruation. In addition, you should not drink frozen drinks when you have your period, as it will cause vasoconstriction, resulting in contraction of the uterus and the possibility of menstrual pain. There are also some fruits that should not be eaten, like pears, bananas, watermelon and other cold fruits that may cause menstrual cramps. There are also cold foods such as barley and winter melon, which can also cause dysmenorrhea. It is advisable to drink a bowl of hot brown sugar water every day when you have your period, which not only eliminates fatigue but also has the effect of replenishing blood, which can make the menstrual blood flow more smoothly.