A “period” is just one part of the menstrual cycle, an important biological rhythm for athletes.
In Girls Running: All You Need To Strive, Thrive and Run Your Best, Melody Fairchild and I discuss these concepts throughout the book.
For additional information, check out the links below.
Why a missing period is a red flag
Top three questions from runner girls
Why adults should talk about periods
Elizabeth W. Carey 