The 4 phases of your cycle, explainedLes 4 phases de ton cycle, expliquées

Pop quiz! Name all four phases of your menstrual cycle.

If you got two, you're average. Most women can name "period week" and "the rest of the month." That's the problem.

The rest of the month isn't a flat line. It's three separate hormonal climates, each with its own rules. Once you can name them and see them coming, the chaos starts making sense.

Phase 1: Menstrual phase (days 1 to 5)

What's happening: Estrogen and progesterone are at their lowest. Your uterine lining is shedding. You're losing blood (30 to 80 mL), iron (10 to 40 mg), B12, and folate. Inflammation is at its highest, driven by prostaglandins.

How you feel: Tired. Cold. Heavy. Sometimes crampy. Your brain feels slower because it kind of is, in measurable ways. Energy is at its monthly floor.

What your body needs: Warm, iron-rich, anti-inflammatory food. Easy-to-digest meals. Slow movement. Less coffee, less alcohol, less ice-cold everything. More rest than the rest of the month.

Foods to lean on: Red meat, lentils, beets, dark leafy greens, salmon, soups, stews, ginger tea, dark chocolate.

What to skip: Heavy workouts. Big presentations on day 1 if you can avoid them. The third coffee of the day.

The mindset shift: This is your deload week. Treat it like recovery, and the rest of the month responds.

Phase 2: Follicular phase (days 6 to 14)

What's happening: Estrogen rises steadily. New follicles develop in your ovaries. Your verbal memory improves. Insulin sensitivity is at its best. Mood lifts because estrogen helps your brain produce serotonin and modulates dopamine.

How you feel: Lighter. Brighter. More social. Verbal. Open to new ideas. Less hungry, more energetic. The fog of week 1 clears, and your brain feels fast again.

What your body needs: Fresh, light, varied food. Probiotics to support the estrobolome (the gut bacteria that help your body metabolize estrogen properly). B vitamins for the cognitive load. Lighter proteins. More hydration, because rising estrogen affects fluid balance.

Foods to lean on: Kimchi, kefir, sauerkraut, yogurt, eggs, fish, tofu, sprouts, leafy greens, citrus, berries, oats, quinoa.

What to skip: Heavy, lethargic meals that drag down the energy your body is finally giving you back.

The mindset shift: This is your launchpad week. Schedule the hard things: pitches, negotiations, big writing, difficult conversations. This is when your brain can carry them.

Phase 3: Ovulatory phase (days 15 to 17)

What's happening: Estrogen peaks, then crashes. An egg is released. Testosterone rises briefly. Anti-inflammatory effects are highest. Your face literally looks more symmetrical (research-backed, not a joke).

How you feel: Your most confident self of the month. Most social. Most verbal. Most attractive (and most attracted). Energy is peak. Inflammation is lowest. Sex drive is up.

What your body needs: Antioxidants to support detox pathways processing the estrogen surge. Cruciferous vegetables (broccoli, cauliflower, brussels sprouts) help the liver metabolize estrogen. Light, fresh meals.

Foods to lean on: Broccoli, cauliflower, brussels sprouts, asparagus, berries, eggs, fish, almonds, turmeric.

What to skip: Anything that distracts from the social and creative window. This is the wrong week to hide in your apartment.

The mindset shift: This is your communication week. Save the hard conversations for these three days. Send the bold message. Have the awkward talk. Your nervous system is at its most resilient.

Phase 4: Luteal phase (days 18 to 28)

What's happening: Progesterone rises, peaks, then drops in the last few days. Estrogen rises briefly, then crashes too. Insulin sensitivity drops, so the same carbs hit your blood sugar differently. Magnesium is burning fast. Serotonin drops as estrogen falls. Body temperature rises. Sleep gets lighter.

How you feel: First half: steady, focused, productive. Second half (after day 22 or so): moodier, more sensitive, more inward. Cravings. Bloating. Trouble sleeping. Tired in ways that feel different from being tired.

What your body needs: More food (yes, more). More magnesium. More B6. Complex carbs to keep serotonin steady. Healthy fats. Iron, because your period is coming. Less caffeine after noon, less alcohol, less ice cream past 10pm.

Foods to lean on: Sweet potato, oats, quinoa, dark chocolate, pumpkin seeds, spinach, almonds, avocado, salmon, banana, turkey.

What to skip: Big presentations on day 24 if you can move them. Three coffees after lunch. Two glasses of wine on a Tuesday.

The mindset shift: This is your consolidation week, then your wind-down week. Finish, polish, organize. Don't start new things. Your brain is in nesting mode for a reason.

How to actually use this

You don't have to memorize every food or every shift. The point isn't to become a hormonal scholar. The point is to stop being surprised by yourself every week.

Track day 1 of your last period. Use a calculator or an app (Cycled is built for exactly this) to know which phase you're in today. Make one or two decisions this week that fit the phase you're in, instead of fighting it.

That's it. That's cycle syncing in practice.

You don't have one body. You have four versions of one body, on a 28-day-ish rotation, every month, your whole reproductive life. Pretending you only have one is the reason you feel like a stranger to yourself half the time.

With Cycled, we tell you what's happening, where you are, and what your body is asking for, today.

Just the right thing at the right time.

La traduction française arrive bientôt.