The book feels too much like trying to sell an online course. With random user stories in between and teasers for why the online course is the best. And I am pretty sure I found some mentioning of non peer-reviewed science. So everything in here should really be taken with a grain of salt!

But I appreciate the general idea of this book. I never really knew anything about my cycle, and I think as someone with a uterus, it's not good!
There is good information on biochemistry and hormonal systems in here.