Picture this : it's day 2 of your period, you're tired, but you have a 10 am call. You drink a third coffee. You skip lunch because you're not hungry. You push through. By 4 pm, you're staring at your screen wondering why your brain is mush. 🤯

Then, you blame your sleep, your stress, your job. You promise yourself a better routine starting Monday...

Here's the thing: your routine is fine, your sleep is fine.

What your body is actually asking for on day 2 of your period is not endurance, it's recovery. And almost no one ever told you that the way you fuel this one week shapes how you feel for the next three.

What's actually happening in week 1

The menstrual phase is the first phase of your cycle, days 1 through 5 in a 28-day cycle. Estrogen and progesterone both bottom out, your uterine lining sheds, and you lose between 30 and 80 mL of blood, which carries with it about 5 to 15 mg of iron, plus B12, folate, and other micronutrients.

That last sentence is the one most people skip. Every period, your body loses iron, B12, and folate. You bleed out the raw materials your blood needs to keep being your blood.

If you don't replace them on the way out and on the way back in, you start every cycle slightly behind. Over months, slightly behind compounds. That is how women get to "always tired" without anything technically being wrong with them.

Three shifts happen during your period that almost no one talks about:

  • Iron stores drop fast: a heavy day of bleeding can cost you up to half a daily iron requirement, and most women aren't anywhere near their daily target on a normal day.
  • Inflammation peaks: prostaglandins (the compounds responsible for cramps) spike at the start of your period. The right foods can dampen them, the wrong foods can amplify them.
  • Energy bottoms out: estrogen and progesterone are at their lowest. Your body is doing real metabolic work shedding the lining and starting the new cycle. It needs fuel, not pressure.

This isn't a vibe, it's a real recovery week in the middle of your month, and most women treat it like a 5-day endurance test.

So, what to eat during your period?

The job of your menstrual-phase nutrition is to do three things at once: replace what you're losing, calm inflammation, and give your body warm, easy-to-digest fuel while it works.

Iron-rich foods are non-negotiable: red meat, lentils, beans, tofu, spinach, beets, pumpkin seeds. Heme iron from animal sources absorbs faster (around 25% of what's on your plate), non-heme iron from plants needs help to absorb (closer to 10%).

Vitamin C with your iron is the cheat code. Squeeze lemon on your lentils, add bell peppers to your beef stir-fry, eat citrus with your meal. Vitamin C can triple non-heme iron absorption (read that twice).

B12 and folate support new red blood cell production: salmon, eggs, sardines, leafy greens, asparagus, chickpeas. You're literally rebuilding your blood --> give it the raw materials.

Anti-inflammatory foods ease cramps from the inside: fatty fish (omega-3s), turmeric, ginger, berries, dark leafy greens. Studies show consistent omega-3 intake can meaningfully reduce period pain severity over a few cycles.

Warm, easy-to-digest meals: soups, stews, slow-cooked grains, herbal teas. Your gut motility shifts during your period, and heavy, raw, cold foods can feel like a brick. Cook things down, add warming spices.

Hydration matters more than you think. Blood loss plus slight fluid shifts = you need more water, not less.

What to ease back on

  • Excess caffeine : it constricts blood vessels (including the ones in your uterus), which can worsen cramps. One morning cup is fine, you're miserable enough!
  • Alcohol: worsens inflammation, disrupts sleep, dehydrates you.
  • Ice-cold drinks and ultra-processed foods: both make your gut work harder when it's already busy. Don't think about it too much, just notice if your body is happier with warm food this week.

Eat warm, eat iron-rich, add vitamin C, dampen inflammation. No restriction, no "detox," no green juice cleanse.

The compounding cost most women don't see

Here's the part nobody talks about: this isn't just about feeling better this week, it's about iron banking.

Most women between 18 and 45 are walking around with low ferritin (your iron storage marker). Not anemic by medical standards, but low enough to be tired, foggy, less resilient. The single biggest reason is that they're losing iron every cycle and not replacing it fully. The losses are small per cycle, the compound is huge over years.

If you eat well during your period (and especially in the week right after, when your body is actively rebuilding), you keep your iron bank topped up. If you don't, you slowly draw it down.

This is why some women in their late 30s and 40s say they feel "permanently exhausted" with no clear medical cause. It's not their sleep, it's not their stress, and it's not in their head.

It's a decade of slightly under-fueled period weeks.

The bigger point

The menstrual phase shouldn't be an interruption to your life. It's the foundation of how the rest of your cycle feels. Treat it like a deload, not a death march. Eat warm, eat iron, ease back on the stuff that fights your body, and watch how the rest of your month responds.

Cycled helps you with all of this. We tell you what your body needs in the phase you're actually in, with food you actually eat. No calorie counting, no restriction, no powering through the one week of every month your body is asking for less pressure and more fuel.

Just the right thing at the right time.

La traduction française arrive bientôt.