Another study this one from the American Heart Association finds that today's kids are less fit than their parents were at the same age.
An analysis of studies on millions of children around the world finds they don’t run as fast or as far as their parents did when they were young.
On average, it takes children 90 seconds longer to run a mile than their counterparts did 30 years ago. Heart-related fitness has declined 5 percent per decade since 1975 for children ages 9 to 17.
I don't remember our kids (the parents of today's kids) having had to run a mile at age 9.