All-round informative enough. I was looking for a science-based read on the effects of female hormones during the menstrual cycle on mood, energy levels, and exercise performance. I wish there’d be more references to actual scientific research though and that it had been written in a more serious tone, and less like a YA novel. I didn’t care for the ‘seasons’ analogy either but overall, the book did the trick and I got the info I was looking for.