The Silent Performance Killer Hiding in Women’s Running

Most women runners think RED-S is something that happens to “other athletes.” In reality? It’s one of the most common reasons female runners struggle with fatigue, plateaus, nagging injuries, missing periods, and feeling like their training just… isn’t working. In today’s episode, I’m breaking down what RED-S actually is, why it doesn’t start with weight loss or appearance, and how it quietly impacts your hormones, metabolism, recovery, bone health, and performance. You’ll learn: Why RED-S is an energy availability issue, not a diet issue The surprising symptoms runners mistake as “normal” How missing or irregular periods act as a giant red flag Where women unintentionally create RED-S in their training The performance transformation that happens when you finally fuel enough If you’ve been hitting your miles but not seeing the progress you expect, this episode is a must-listen. Episode CTA: Ready to actually adapt to your training this year? Join my Eat Like an Athlete Bootcamp — presale pricing ends January 1! Ready for some new socks? Check out Sock Guy and use my code serena20 for 20% off your order! Don't forget to follow me on Instagram @runnergirldietitian

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