I am
I started running in my late 30s, and did a bunch of things to improve my sleep after last DC.
I did a bit of gymming & hiit type classes. Then lockdowns, but our gym put loads of online stuff on so I kind of kept it up.
Then I started going to the gym 3 times a week, and a relatively physical hobby twice a week and now every time I catch myself in the mirror whilst changing I can't resist the urge to flex! 😂
I did start with a bit of a genetic advantage. I didn't need to lose weight. But having said that, it's all come together in the last month or so and I'm really happy with my weight & shape.
It's taken about 5 years so far, and I think it'll be another 2 till I reach my quad goals vague targets.
Meanwhile, DH does have weight to lose and is on a similar journey. We want to go into middle age as fit as we can.
It's definitely possible. AND, I've been surprised at the mental aspect of it. I'm also the happiest/sanest/least stressed I've been since having kids.
I think I was partly inspired by Rebel Wilson's 'year of health' she had just before she turned 40.