stronger. faster. fueled.
Training, fueling, science, and community for female athletes looking to perform at their long term best
Founded by Sierra Darling, incoming Yale track and field athlete and creator of a research-driven female athlete health initiative, born from a summit with an expert panel on RED-S, LEA, and women's performance.S.F.F. is a platform dedicated to bringing female athlete health and performance to the forefront through science, storytelling, and community.
it couldn’t just be a one-time event.
female athletes deserve better information
For too long, conversations around female athlete health have been overlooked, misunderstood, or ignored entirely.
From RED-S (Relative Energy Deficiency in Sport) and menstrual health to fueling, recovery, and long term performance, many female athletes are left navigating critical health challenges without the education or support they deserve.
stronger. Faster. fueled. exists to change that
The event that started it all.
The event that started it all.
What began as an AP Statistics Capstone Project became something much bigger.
After experiencing RED-S firsthand as a track and field athlete, I spent months researching female athlete health, eventually writing a 40-page thesis on the challenges faced by women in sport, especially around energy deficiencies. I wanted this project to create real impact.
So I organized a community event that brought together physicians, sports nutritionists, professional athletes, coaches, parents, and athletes for a summit focused on female athlete health and performance.
The results exceeded every expectation. Event survey analysis showed statistically significant improvements in knowledge across nearly every area measured, along with increased prioritization of menstrual health among female attendees.
What stayed with me the most wasn’t just the statistics. It was the young athletes who shared how this event changed how they viewed their health, performance, and future in sport.
That’s when I realized the movement couldn’t end with a single event.
S.f.f. was created to keep it going
what you’ll find here
science
The S.F.F. newsletter breaks down the latest research in female athlete physiology and performance into clear, actionable insights. From RED-S and menstrual health to recovery, sleep, iron, and training adaptations, everything is translated into practical tools you can actually use.fueling
Simple, performance-focused fueling strategies designed for real athletes in real life. Expect easy, high-performance recipes, race-day nutrition guidance, and recovery fueling education. S.F.F. also collaborates with nutrition and performance brands working to advance women’s health in sport.training
Training insights shaped by both lived experience as a competitive athlete and input from coaches and professional athletes. This includes strength work, sprint and endurance development, recovery strategies, and performance habits.community
S.F.F. exists to break the silence around female athlete health and create spaces where these conversations are normal. Through events, expert panels, and digital conversations, we’re building a community where athletes, coaches, and professionals can learn from each other and push the field forward together.