Menstruation, or period, is normal vaginal bleeding that occurs as part of a woman's monthly cycle. Every month, your body prepares for pregnancy. If no pregnancy occurs, the uterus, or womb, sheds its lining. The menstrual blood is partly blood and partly tissue from inside the uterus.

1. Don't drink cold/sparkling water during menstruation.

2. Avoid applying shampoo on the head cause the pores of head are open during period & cause a headache so it's very dangerous & this can be cut when you're young or later when you get older.

3. Avoid eating cucumbers during period cause sap in the cucumber may block period (blood loss)in the uterine wall&may cause sterility.

4. Your body shouldn't be hit by hard objects specially the abdomen as it can cause vomiting & uterus can be injured.

5. Drinking ice during period can cause menstrual blood to remain in the uterine wall after (5_10)years can cause "uterine or tumor cancer"