If your energy and mood seem to swing across the month, you're not imagining it — you're feeling your cycle. Here's the simple map.
A "typical" cycle is around 28 days, but anywhere from about 21 to 35 is normal, and yours is yours. It has four phases:
1. Menstruation (roughly days 1–5). The bleed. Oestrogen and progesterone are at their lowest. Energy is often low; rest is reasonable. This is day 1 of your cycle.
2. Follicular phase (roughly days 1–13). As the bleed ends, oestrogen rises. Many women feel their best here — more energy, clearer thinking, better mood, higher motivation. A good window for challenging tasks and harder workouts.
3. Ovulation (around day 14). Oestrogen peaks and an egg is released. Energy, libido, and confidence often peak too. It's brief — a day or so.
4. Luteal phase (roughly days 15–28). Progesterone rises after ovulation, bringing a calmer, more inward feeling at first. In the later luteal days, both hormones fall if there's no pregnancy — and that drop is when PMS symptoms (mood dips, bloating, cravings, irritability) tend to appear. Then the bleed begins and the cycle restarts.
Why this map is useful:
You don't need to rigidly "cycle-sync" your life. But simply knowing where you are in the month can make your energy, cravings, and mood feel far less random.
What are the four phases of the menstrual cycle?
Menstruation, the follicular phase, ovulation, and the luteal phase — each led by shifting oestrogen and progesterone.
Why do I feel different at different times of the month?
Because oestrogen and progesterone rise and fall across the cycle, affecting energy, mood, sleep, and appetite in predictable ways.
Keep reading: PMS or something more? Understanding PMDD · A woman's hormones, explained · Take the free Hormone Quiz