Most girls get their first period between the ages of 10 and 15, with the average age being around 12. However, every girl's body has its own schedule, and it's perfectly normal for some girls to start their periods earlier or later.
Factors like genetics, body mass index, and environmental exposures can all influence the timing of puberty and the onset of menstruation. While most girls get their periods within a specific age range, it's important to remember that there's a lot of individual variation.
