I was getting into bed last night at 9:30pm because I'm a grownup (and the mum of a toddler), and I suddenly felt my lower back go into spasm.
This is new, I thought to myself, rummaging through draws and cupboards for the heat pack my Nan had gifted me decades ago. It had only been whipped out on the odd occasion I was struck down with period cramps, that is, until now.
Welcome to your thirties.
It's not just my lower back's new disobliging attitude either. There are fine lines where once lived smooth skin, the hangovers have real staying power, and I find myself answering "how are you?" with "tired" more often than I'd like to admit.
While you're here, watch these women kicked some major goals after the age of 30. Post continues after video.
There are many things that I've learned about women's health in my thirties that have shocked the pants off me and the list is only growing the deeper I venture into the decade.
Here's precisely 6 of them.
So, I have to think about my bone density already?
Until our thirties, women's bone density increases at a higher rate than it's lost. Sounds like a good system, right?
Well, according to the Cleveland Clinic after around age 35, things begin to shift in the opposite direction, and we start to lose density faster than our bodies can create new minerals.