In my snooty elitist young-and-still-uninjured opinion, anyone "healthy" is able to run one mile (non-stop). I don't care how fast you run it. If you can't run one mile non-stop, you aren't in good physical condition.

If you are physically incapable of running one mile, something is wrong with your health. Health At Any Size - sure. If you can run one.

That's kind of the point I'm trying to make, actually. Being of 'average' fitness doesn't make you 'healthy'. Average fitness can mean you don't exercise often, but you do exercise occasionally. If you have a flat stomach at 30 or can easily run 10 miles then you are not of average fitness, you are above average.

Being 'healthy' or 'fit' is not 'average fitness' in my view. That being said, you could be right and it might have to do with age or even culture/location how people view fitness and health.

It's also possible that if you are around people that exercise often or if you exercise enough that you have seen drastic change in your fitness that you could be blinded by the long period of time of being at where you are, and not quite remember or not quite realize that people on average are actually where you were at probably only 2-4 weeks into serious exercise and stagnate there for long periods of time without progress.

As an aside, a lot of people equate weight to health as well, too. I was told by a doctor recently after I said that I was going to start exercising more that "Oh you look pretty good, though". I know for a fact that I'm not physically fit, and would probably be called "average", but since I eat well I tend to look healthy when you look at me with a shirt on.