Here’s a shocker: a study by John Hopkins has concluded that,

Participating in physical activities in and out of school more than two times a week protects adolescents from becoming overweight young adults, according to new research.

Basically the study determined that if a kid was active rollerblading or playing basketball or whatever, the chances of being overweight as an adult was reduced by 48 percent. Common sense tells me that the likelihood of a kid being active when they are young, the chances are great that they will continue to want to be active when they get older. Johns Hopkins didn’t need to commission a study and waste their money on that. But I guess somebody had to spend some grant money.