I'd look at it from two points of view.
The first is that a community in which the majority of citizens cooperate and support each other is healthy. That is, it's a community that can expect to exist as such for a long time.
The second is that a community in which a significant proportion of its members take advantage of the natural surroundings -- whether by outdoor occupations like farming or building, recreations like gardening or walking, or participation in sport or other physical recreations. It would be somewhere kids were encouraged to play outdoors and where fast food was eaten as an occasional treat rather than as a regular part of their diet.