@russ_utsa – The reason you won’t see “a person considerably overweight jogging with their dog in the park” is very simple: the mechanics of the body make this a very unwise choice of behavior. The excess weight can cause injury to legs, feet and hips unless the weight is first lost through low-impact exercise, which can be just as strenuous as jogging. Check out a water aerobics class and you will see.
BTW, many professional football players are in fact obese (especially the big guys who squash people). Do you consider them lazy?
And then there is this recent research:
“Roehling and his team studied the relationship between body weight and personality traits for nearly 3,500 adults. And they found that contrary to widely held stereotypes, overweight and obese adults were not significantly less conscientious, less agreeable, less extroverted or less emotionally stable.” ( http://www.medindia.net/news/They-Aint-Fat-and-Lazy-Obese-Employees-also-Work-Hard-39550-1.htm )
In addition, being morbidly obese is not caused by just one thing in isolation such as laziness:
“Being seriously overweight is not caused by one single factor. There are a number of things that may interact and contribute to one becoming morbidly obese… These include:
* Genetics
* Culture
* Physical inactivity
* Emotional or psychological factors
* Gender
* Age
* High-fat / High Calorie diet
* Medical problems”
( http://www.stvincent.org/ourservices/bariatrics/about/causes/default.htm )
You need to rethink your sample size and broaden your horizons.