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Understanding the Menstrual Cycle

A simple guide for both women and men to understand monthly cycle changes and how they affect fertility.

Last updated 2026-06-19 ยท Pending medical review

Understanding the Menstrual Cycle

Cycle phases

The menstrual cycle has four main phases: period, follicular, ovulation, and luteal. Each affects hormones, mood, and fertility differently.

A typical cycle is 21โ€“35 days, with day 1 being the first day of bleeding.

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