[MrEdd]

Another thing that is nonnegotiable to swallow the BS on the modern obesity problem: you must under no circumstance study crowd photographs taken before the first World War.

Before the rationing of the two world wars, sandwiching the great depression people ate well and a whole lot of them were fat. If you only have a mental picture, rather than inconvenient empirical evidence then you can imagine they were all fit and trim.

[Theoria]

Amish.

Seems like a simple method. Grow your own crops and gardens. Trade with or sell products to like minded persons.

Have a strong work ethic. Work outside, teach that to the younger generation, spend activities getting dirty, be around germs. Go to church.