Since I'm already getting every comment in my email due to subscription to this thread I'll add my 2 cents.
I've more or less always been able to eat what I wanted as I've always been running/gyming, but noted that after spending a few months on my arse from my leg, that my metabolism seems to have dropped a gear (I'm also into my 30s now so no doubt tat plays a role).
I'd always prefer to just exercise more and eat what I want, but my current state of leg/back health does not allow over exertion so I've had to be somewhat more mindful at least on portion size.
My main point being, what works for one will not always work for everyone else, we're all at different points, wanting different things, and have different bodies trying to achieve it.
Do what works for you.