Menstrual Cycle

The phases of the cycle, how prediction works, symptoms and when it's worth seeking help.

5 articles

The 4 phases of the menstrual cycle, explained

The menstrual cycle is usually divided into four phases — menstrual, follicular, ovulatory and luteal — and each brings different changes in the body and in how you feel. This model is a teaching reference: the length of each phase varies a lot from person to person, and there is no single "correct" cycle. Understanding the phases helps you follow your own body with more calm.

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How cycle prediction works (and why it's sometimes off)

Cycle prediction is an estimate: it looks at the history you've logged and projects when your next period is likely to come. Because the body responds to stress, sleep and life changes, that date can shift — which is why the prediction is sometimes off. And, importantly: cycle prediction is not a contraceptive method.

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Symptoms across the cycle and what to do about PMS

Across the month, it's common to feel changes in mood, energy and body — and in the days before menstruation this tends to become more evident, in what we call PMS (premenstrual tension). Most symptoms are mild and passing, and small acts of care help you get through them better. But intense pain or symptoms that disrupt your life deserve a professional's attention.

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How your cycle affects training, sleep and energy

Across the phases of the cycle, it's common for your energy, sleep and training performance to fluctuate — more drive on some days, more desire to rest on others. There's no single pattern: everyone feels it differently. Noticing these shifts helps you train and rest more kindly, in your own time.

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Irregular cycle: when it's worth seeking help

A cycle is considered irregular when the interval between periods varies a lot from one month to the next, or when menstruation comes very spaced out, very frequent, or disappears for a while. Occasional variation is common and isn't always a cause for concern. Even so, some signs are worth a conversation with the gynecologist — and your logged history helps a lot in that conversation.

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