I see the exact opposite in the kids from the local high school -- on average they are much more fit than we were at that age. My daughter lifts 3 times a week and runs 4 miles on another 3 days. My son lifts 4 days and runs 3 days (he's in college now). They both have a pretty broad range of friends and the only kid who's got any kind of blubber is an offensive lineman who could probably break me in half.
Almost everone does a sport - even the stoners play lacrosse.
If anything, they are hypercompetitive. I look at these kids and I see real hope for the future.
Now some of their
parents, thats another story...