Q.Visit a nearby stadium and talk to women athletes. Collect data on 5 such athletes in their teens. Are they facing any problems related to their health, diet, etc.? Discuss this in class.

The First Menstrual Period

The first menstrual period, called menarche, marks the point at which a girl's body reaches sexual maturity — the beginning of puberty's reproductive changes becoming visible. It is not an illness and nothing to be ashamed of; it is simply a biological signal that the body has reached a new stage of development.

What Actually Happens

Every cycle, the uterus builds a soft, blood-rich lining to prepare for a possible pregnancy. If no pregnancy occurs, the body sheds this lining — menarche is the first time this shedding happens. It typically occurs somewhere in the range of 8 to 15 years of age, and the exact age varies considerably from one girl to another depending on genetics, nutrition, and overall health.

The bleeding itself usually lasts around 3 to 5 days, and a woman continues to menstruate from puberty until menopause, roughly ages 45–55 (menopause typically arrives around age 50). A normal menstrual cycle — the gap from the start of one period to the start of the next — falls between 21 and 35 days; a cycle shorter than 21 days or longer than 35 days is considered outside the normal range and worth medical attention.

Why It Matters

Menstruation is a sign of reproductive health, and understanding what is normal for one's own body is the first step to noticing when something needs medical attention — for example, periods that stop for several months, periods that are extremely painful, or bleeding that is unusually heavy. …