The physiological fluctuations of the female body over a lifespan are complex indeed - but it is knowable. Katja has pulled together research from all corners of science to compile the go-to reference for any coach, athlete, trainer, clinician, anatomy enthusiast or researcher working with the cycling or no longer cycling female. It puts an end to arguments and misinformation regarding hormones, training and food. It tackles locker room conversation around sexual behavior, sleep, psychological impacts and so much more. The book is also written as a time-stamp of how and why research on the female athlete has been historically dim, but this document represents a tide-shift of awareness and interest in developing healthy female movers no matter her age or stage of life.