Anecdotally speaking, I suspect that youth have simply watched their parents and adopted their sedentary lifestyles. Less than half of American children participate in physical education and most are not physically challenged when they do participate.
My generation, baby boomers, are perhaps the most culpable. Over the next ten years, millions of boomers will retire. In all likelihood, we will take our toxic lifestyles to the sidelines with us. I predict that succeeding generations will see the failings of boomer behavior and make adaptive changes. Although most boomers' parents smoked and did not wear seat belts, most boomers smoked dramatically less and overwhelmingly, do wear seatbelts. Succeeding generations always learn from the previous one. I suspect that there is a lot to learn from boomers. Remember, all kids count.
Scot Hurlburt can be reached by e-mail at firstname.lastname@example.org