âEmptyâ literally means âcontaining nothing.â When it comes to food, empty means that that food contains little or no essential vitamins or minerals. In other words, these foods provide nothing of value to your body beyond calories that create excess pounds.
While menstruation usually begins between ages 12 and 13, it may happen at a younger or older age. The first menstrual period is called menarche.. The menstrual cycle is about four weeks long, starting on the first day of bleeding and ending when the next period begins. However, it can vary greatly when a girl first starts her period. It may skip months or come several times per month in the beginning.
1 The average menstrual cycle lasts 23-35 days (counting from the first day of one period to the next). 2  Some women may not have a regular cycle (number of days between periods). 3  This is normal, especially in the first 2 years after a woman's first period. 4  Most women have their period for about 6 days. This is normal, especially in the first 2 years after a woman's first period. 2  Most women have their period for about 6 days. 3  Some may have it fewer than 6 days and some may have it for more than 6 days.