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Marie Claire
Marie Claire
Lifestyle
Ally Head

I'm a Renowned Female Health Expert—and I Want You To Know The Truth About Marathon Training and Your Cycle

Training around your menstrual cycle.

As a marathon runner, female health expert and registered nutritionist, I'm hugely passionate about educating women on their menstrual cycle, as well as how their period can impact their day-to-day lives. A former NHS doctor, I set up The Food Medic back in 2012, and have written two books - The Female Factor in 2022 and Not Just a Period in 2025.

But today, I want to get into training around your cycle. The biggest myth about periods and performance? That you can’t perform at your best during your period. You absolutely can. Women compete, set personal bests, and win gold medals while on their period.

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