From the very first time she laced up her sneakers at high school track practice through her final race as a collegiate athlete, Olympic runner Colleen Quigley never felt ashamed to have a period. Her parents and coaches normalized the conversation from a young age, she says, and she quickly learned that menstruation is simply a facet of her physiology (and an important one, at that). "They always made me feel like this is something we can talk about, and getting a period is a good thing," Quigley tells PS.

"I do feel really lucky that this was my experience, and I had really good leadership and mentorship around it, because I know that's not always the case." Her experience is not the norm. In fact, according to data collected as part of Adidas's Stay in Play campaign, among the 14,000 athletes they surveyed, 65.

3 percent had not received education on periods, and 75.8 percent had not discussed menstrual cycles with their coach. This matters for a number of reasons, not least of which is that, as research suggests, nearly one in four girls drops out of a sport during adolescence due to period-related concerns.

But if the menstrual cycle is a perfectly natural process in the body — one that can have an impact on training, no less — why the silence? PS chatted with athletes, coaches, exercise physiologists, and subject matter experts to help elucidate why period taboo persists in the sports world today, why it's doing a major disservice to our female athletes, and where we.