Periods and Performance: Why Your Cycle Matters More Than You Think

Let’s clear something up: a regular period is not a weakness—it’s a sign your body is healthy and functioning as it should. For far too long, female athletes have been told to ignore or hide their menstrual cycle. But in reality, understanding it can be one of your greatest tools for performance, injury prevention, and overall well-being.

The Menstrual Cycle: More Than Just “That Time of the Month”

The average menstrual cycle is about 28 days and can be divided into four phases:

1. Menstrual Phase (Days 1–5): Your period. Hormones are low, and energy may dip.
2. Follicular Phase (Days 6–14): Estrogen rises. Strength, focus, and coordination often improve.
3. Ovulation (Around Day 14): Estrogen peaks. Energy is high, but ACL injury risk may spike.
4. Luteal Phase (Days 15–28): Progesterone rises. Some may feel bloated, fatigued, or less explosive.

Each phase impacts how you feel and perform. And while not everyone experiences major shifts, tracking your cycle gives you personal insight into what your body needs.

“Instead of fighting your cycle—learn to work with it.”

Why Tracking Matters

Cycle tracking helps athletes:

• Identify energy highs and lows
• Optimize training loads and recovery
• Spot potential red flags (like missed periods or irregular cycles)
• Better understand mood and emotional fluctuations

Tracking can be as simple as using an app (like Clue, FitrWoman, or a calendar) or jotting down symptoms in a notebook. The key is consistency.

Training Smarter, Not Just Harder

During high-hormone phases (like luteal), female athletes may benefit from:

• More recovery between high-intensity sessions
• Extra sleep and hydration
• Emphasis on form and technique over max output

In low-hormone phases (like early follicular), many athletes feel strong and sharp—ideal for heavy lifts or intense competition.

Understanding these trends allows for more personalized programming—and fewer surprises.

What If You Lose Your Period?

Missing your period for 3+ months (when not on hormonal birth control) is a big red flag. It may signal:

• Low energy availability
• Excessive training volume
• High stress or under-recovery
• A condition called Relative Energy Deficiency in Sport (RED-S)

A lost period is never “normal” for an active girl or woman. It’s your body’s way of saying: “I don’t feel safe enough to function fully.” Left untreated, it can lead to bone loss, infertility, and serious health concerns.

“No period = no personal bests.”

Empowerment Through Education

Athletes, parents, and coaches need to talk openly and often about menstrual health. It’s not embarrassing—it’s biology. When female athletes understand their cycles, they’re better equipped to advocate for their needs and train more effectively.

References:

• De Souza MJ, et al. “2014 Female Athlete Triad Coalition consensus statement.” Curr Sports Med Rep.
• Martin D, et al. “Menstrual cycle symptoms and athletic performance.” Br J Sports Med.
• Sims ST. ROAR. Rodale Books, 2016.