What is the average duration of a menstrual cycle?

The average duration of a menstrual cycle is typically around 28 days. This figure is often considered the standard, although individual cycles can vary widely. A 28-day cycle allows for approximately 14 days from ovulation to the onset of menstruation, aligning with the typical hormonal changes that occur during this period. The cycle is divided into phases: the follicular phase precedes ovulation, and the luteal phase follows it. While some individuals may have shorter cycles (around 21 days) or longer ones (up to 35 days), the 28-day cycle serves as a common benchmark for educational contexts regarding reproductive health and physiology. This understanding is crucial for grasping how the menstrual cycle relates to ovulation, fertility, and various hormonal regulations within the body.