Menstrual cycle phases: a practical guide to training, recovery, and nutrition

The menstrual cycle is usually described in four phases: menstrual, follicular, ovulatory, and luteal. A full cycle runs roughly 21 to 35 days for most people, though the length and the balance between phases differ from person to person and from one cycle to the next.

The menstrual phase is your period itself, typically a few days to about a week. The follicular phase follows and fills much of the first half of the cycle. The ovulatory phase is a short window around mid-cycle. The luteal phase is the back half, leading up to the start of your next period. These are general descriptions of where you are in the calendar, not a measurement of your hormones, and your own cycle may not divide as neatly as a textbook diagram.

Wellness Project tracks your cycle from the period start and end dates you log, and nothing else. It is calendar-based, not biometric: there is no temperature reading, no hormone test, and no attempt to detect ovulation. From your logged history it works out your typical cycle length and labels where today most likely falls among the four phases, calculated fresh each time rather than stored as a fixed state.

Because it learns from your own history, the estimate gets more representative as you log more cycles. With only one cycle on record it stays cautious and holds back a confident phase label until it has seen a couple, and if your cycles are highly irregular it will say so rather than guess. When you can expect your next period, it gives a likely date range rather than a single day, with the width of that window reflecting how regular your recent cycles have been. If you use hormonal birth control, you can switch the feature to log periods only and skip phase estimation entirely.

Cycle-aware training is simply using your phase as one more piece of context, alongside your sleep, your recovery numbers, and how you actually feel. None of the patterns below are rules, and they vary widely between people. Train by feel first; let the phase add color, not give orders.

During the menstrual phase, many people prefer easier movement and prioritize sleep, and a focus on iron-rich foods is a common choice. In the follicular phase, energy often climbs and some people find harder training feels more manageable. The ovulatory window is when many report feeling strongest; a thorough warm-up is always worth it. In the luteal phase, energy and appetite often rise while recovery can feel a little harder, so training by feel and leaning on protein-forward meals are popular approaches. These are general wellness observations, not medical guidance, and what works for you is the part that matters.

Cycle tracking is opt-in and protected by design. It is never on until you turn it on with a separate, explicit consent, and you can withdraw that consent at any time. We store only the period dates you log, never symptom scores or inferred states beyond the calendar phase labels.

Your cycle data is never sold or shared with advertisers, and it is not sent to any AI provider, analytics service, or error-monitoring tool. You can delete all of it permanently in one tap, and deleting your account removes it too. We comply with the Washington My Health My Data Act and similar consumer health data laws. The full details are in our cycle privacy policy and consumer health data policy.