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02.01.25

The Four Phases of the Menstrual Cycle

Cycle 101

Cycle

Here it is—a quick and breezy guide to the four phases of your menstrual cycle, which, contrary to what some of us have been led to believe, is much more than just a few days of bleeding. Go figure!

Each of the four phases brings its own set of superpowers and soft spots, affecting everything from your energy levels to your mood and productivity. Getting to know these phases is like unlocking the ultimate cheat code to understanding how you operate on any given day [1][2][3].

1. Menstrual Phase (Days 1-5): The Start of a New Cycle

Aka: The Winter

Welcome to Day 1! This is when your period kicks off. Your uterus is shedding its lining, which is what you see as menstrual blood [1][3]. It might not be the most glamorous phase, but it’s the start of a fresh cycle. This is the time to rest up and take it easy if you’re feeling a bit low-energy.

2. Follicular Phase (Days 1-14): The Reboot

Aka: The Spring

The follicular phase overlaps with your period and continues afterward. Think of this phase as a reboot for your body. Your brain tells your ovaries to start growing follicles (tiny sacs with eggs inside) [1][2]. Estrogen levels rise, your energy starts to boost, and you might feel more sociable and upbeat [1][3]. It’s a great time to tackle new projects and embrace the fresh start!

3. Ovulatory Phase (Around Day 14): The Prime Time

Aka: The Summer

Ovulation is like the main event of the cycle. Around the middle of your cycle, one of those follicles bursts open and releases an egg [1][2][3]. This is the phase where you’re at your most fertile and, naturally, your libido might get a little boost. It's also when you’re likely to feel your most energetic and confident—perfect for socializing, taking on big tasks, or finally fulfilling your TikTok influencer dreams.

4. Luteal Phase (Days 15-28): The Wind-Down

Aka: The Fall

As you move into the luteal phase, your body is winding down and preparing for the possibility of pregnancy. Progesterone levels rise to thicken the uterine lining [1][2]. If the egg isn’t fertilized, these hormone levels drop, leading to PMS symptoms [1][3]. You might feel more introspective, and your mood might fluctuate a bit. It’s a good time for self-care and winding down as you approach the end of the cycle.

Follow us down the hormone wormhole and unlock the secrets your cycle holds for your well-being…

Stardust is waiting for you.

[1] Cleveland Clinic. “Menstrual Cycle (Normal Menstruation): Overview & Phases.” Cleveland Clinic, 9 Dec. 2022, https://my.clevelandclinic.org/health/articles/10132-menstrual-cycle. [2] American College of Obstetricians and Gynecologists. “The Menstrual Cycle: Menstruation, Ovulation, and How Pregnancy Occurs.” ACOG, last reviewed Aug. 2024, updated May 2025, https://www.acog.org/womens-health/infographics/the-menstrual-cycle. [3] Office on Women’s Health. “Your Menstrual Cycle.” U.S. Department of Health & Human Services, 13 Jan. 2025, https://womenshealth.gov/menstrual-cycle/your-menstrual-cycle-and-your-health.

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Discussing an unknown subject can be challenging, especially when it’s difficult to provide evidence for its existence. However, this is not the case with Polycystic Ovarian Syndrome (PCOS), which has existed as long as humanity itself. Despite this, PCOS remains one of the most under-diagnosed and misunderstood health conditions.

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