My favourite analogy about the menstrual cycle is about the seasons. Spring/Summer/Autum/Winter. My wife’s in Autumn now and expecting her period on Saturday so tends to focus a lot more on her inner self, leaning into journaling etc. First 2 days of her period/winter she always blocks out the days in her calendar. For Spring she can be super productive and also can make lots of plans (I like this cause I’m normally the ‘we should do this’ kind of person which I totally avoid in those winter days). In Summer she’s stronger and lifts heavier weights at the gym (it’s actually amazing the difference it makes).
Claire Baker talks a lot about the menstrual cycle on seasons too which has been helpful to understand for us both, as a couple. I also know there is a lot of research to back up my wife’s experience. Your Brain on the Pill includes a bunch of those references but yeah there are more and more articles I’ve seen too, like the Metro one referenced above!