Not sure I noticed anything like this myself. I did see however, around 30, a massive change in work/life balance.
I went from a rather care-free person in my twenties, who took all vacation days he could, worked part-time for stints in junior functions, to becoming a manager and working 55 hour workweeks and less vacation. That tripled my disposable income and reduced my free time by a third.
My caloric intake before this had been somewhat restricted by these two factors: not enough money to have 'eating out multiple meals daily' be an affordable habit. And not limited enough in time to make that habit-of-convenience a necessary one.
Now I can both afford it and time-wise it helps not to have to prepare every single meal anymore. But for my caloric intake this new habit doesn't help.
We're not talking about massive changes here, but even a 5% increased daily intake stacked over the course of years adds up.
Not to mention changes in non-base metabolism caloric expense. Spending so much time on an office chair definitely leaves less time to move the body. Lots has changed about my behaviour. e.g. in my twenties I often spent two nights a month dancing from 1am till 5am, nowadays I'd still go out but it'd be more of a pub-setting, sitting & drinking.
So I do see changes, but I wouldn't necessarily relate them to base metabolism rates. In your case diet and exercise are almost identical but it definitely wasn't for me.
I went from a rather care-free person in my twenties, who took all vacation days he could, worked part-time for stints in junior functions, to becoming a manager and working 55 hour workweeks and less vacation. That tripled my disposable income and reduced my free time by a third.
My caloric intake before this had been somewhat restricted by these two factors: not enough money to have 'eating out multiple meals daily' be an affordable habit. And not limited enough in time to make that habit-of-convenience a necessary one.
Now I can both afford it and time-wise it helps not to have to prepare every single meal anymore. But for my caloric intake this new habit doesn't help.
We're not talking about massive changes here, but even a 5% increased daily intake stacked over the course of years adds up.
Not to mention changes in non-base metabolism caloric expense. Spending so much time on an office chair definitely leaves less time to move the body. Lots has changed about my behaviour. e.g. in my twenties I often spent two nights a month dancing from 1am till 5am, nowadays I'd still go out but it'd be more of a pub-setting, sitting & drinking.
So I do see changes, but I wouldn't necessarily relate them to base metabolism rates. In your case diet and exercise are almost identical but it definitely wasn't for me.