Very true.
A big part of the reason for the rise in kids and teens becoming overweight is a lack of physical activity/ exercise, and a good part of that is because liberals, especially in schools, have banned so much of the physical activity that used to be prevalent among kids just because they're afraid there's a slim chance kids might get hurt.
The other part to this and it is IMHO a product of the lack of recess in school...is how many kids in school these days are on ADD/ADHD meds.
Most of these kids that are on it...more than likely don't have it...but they've got all this energy pent up in them that you and I used to get rid of in a great game of dodge ball or tackle the man with the ball...and the teacher (yes the teacher) makes the diagnosis that the child is ADD/ADHD and needs meds...suddnly you've got a classroom full of zombies....when all you really needed to do was give them about 30 minutes on the playground.
That fear of kids getting hurt and not knowing how to handle it has led to the generation we have today that's seemingly incapable of handling even the slightest bit of hardship in their lives.