Stacy Sims is an accomplished athlete, scientist, and author who has made a name for herself with her groundbreaking research on women's physiology and nutrition. She has dedicated her career to understanding the unique needs of female athletes and helping them to optimize their performance through proper training, fueling, and recovery.

With a Ph.D. in Environmental Exercise Physiology, Stacy’s research on the menstrual cycle, hormonal influences on performance, and gender differences in fluid balance has challenged long-held assumptions about women's physiology and changed the way athletes and coaches approach training and competition. Her innovative approach to nutrition has also been instrumental in helping female athletes to fuel their bodies appropriately for optimal performance.

Stacy is the author of the book ROAR: How to Match Your Food and Fitness to Your Female Physiology for Optimum Performance, Great Health, and a Strong, Lean Body for Life, which has become a go-to resource for female athletes of all levels looking to improve their performance and overall health. The book provides a comprehensive guide to understanding the unique nutritional and training needs of female athletes, including practical strategies for managing hormone fluctuations, addressing energy deficits, and building strength and endurance.

In addition to her research and writing, Stacy is a sought-after speaker and consultant, working with professional and amateur sports teams, nutrition companies, and health and fitness organizations to promote a better understanding of women's physiology and the importance of personalized training and nutrition plans.

Stacy’s passion for empowering women to reach their full potential through sport and science is evident in everything she does, from her research to her writing to her work with athletes and organizations. She is a true pioneer and a leading voice in the field of women's sports science, and her work has had a profound impact on the lives and performances of female athletes around the world.