What does “there are ripped men in prison” have to do with anything? Those men have intrinsic motivation for working out, but not everyone does, that’s kind of my whole point here.

>> how do you make someone do a thing they don’t want to do?

You make it part of the fabric of daily life. If it’s easier to walk than it is to take a car, more people will walk. Of course there will be those who cannot or refuse to, and that’s okay, but systemic changes can lift everyone up on average.

> How do you make some one do a thing, they don't want to do?

You assume what you feel you want to do is intrinsic and not based on your environment. You are a product of your environment. If we change the environment, you will change with it.

By "you" I of course mean large populations over the course of decades.