The follicular phase, luteal phase and ovulation are three important periods that women go through during their menstrual cycle. Each period affects a woman's reproductive health, so understanding the importance of these periods is important for both a woman's physical health and her fertility.

The luteal phase usually occurs on days 17-21 of the menstrual cycle. During this period, a woman's ovaries continue to release eggs and prepare for fertilization. If a woman is not fertilized during this period, her ovaries stop producing eggs, causing the menstrual cycle to end.

Ovulation usually occurs on days 22-25 of the menstrual cycle, when a woman's ovaries begin to secrete mature eggs that can be fertilized. This period is when a woman's fertility is at its highest, so women need to take steps to ensure fertilization during this period.

Understanding the follicular phase, luteal phase, and ovulation is important for a woman's physical health and fertility. If women can correctly judge the dates during these three periods and take corresponding measures, they can maximize their fertility and reproductive health.