Of course they can and they do. But the point is that across the board, healthy societies are those that don't have to "introduce exercise" to their lives. (Mild) exercise is baked into their lifestyle as a byproduct of how they've organized their social lives and especially their built environments.
A public health solution that has "Step 1: Assume people have the time, energy, and discipline to introduce exercise into their daily lives" is not going to work. It really is that simple - that's not how any healthy society works.
FWIW I do think you're sharing good advice and it would solve a lot of problems if people listened to it, but the reality is this advice has been around forever. It doesn't actually make a dent where people need it most: default sedentary, car-ridden, non-health conscious parts of the country.
>Step 1: Assume people have the time, energy, and discipline to introduce exercise into their daily lives" is not going to work. It really is that simple - that's not how any healthy society works.
I'm struggling to respond to this, probably because you might be right. The cynical view of this, is that you can't help people that don't want to help themselves. i.e. Horse-water, leading.
The capitalistic meat grinder will get as much money from them as possible.
Inevitably, they will get sick, pay for outrageous priced miracle drugs (like Ozempic) or for other aliments that could be preventable and eventually die.
So people don't walk their dogs? You don't always have to have a destination.
Parking the furthest from the grocery entrance is surely better than parking right next to entrance?