Recess is sometimes the only opportunity some students have to get exercise during the school day. But, some recess is disappearing in some communities.

Monkey bars, kickball, we all remember recess. However, according to a recent study from the centers for disease control, in some communities, those memories are all that's left.

"Nationwide, we know that 67% offer recess every single day for all students in their schools for at least 20 minutes," CDC researcher Sarah Lee said.

Lee says that leaves more than a third of schools offering recess to just some student, or not at all. And, the reason may surprise you.

"One of the biggest reasons is because of the pressures for improving test scores within core academic subjects," Lee said.

But along with higher test scores may come higher obesity rates. So, in an effort to bring attention to the problem, Lee has joined with the Cartoon Network's "get animated," program to spread the word--and she's starting to get some major league help.

"Recess is where everything started for me when it came to loving sports, and just wanting to be active and wanting to get out there with the rest of the kids," Dwayne Wade said.

Lee and Dwayne Wade agree, recess can do as much for a child's brain as it does for their bodies.

"There is evidence that shows recess can actually improve classroom attentiveness, concentration and time on task," Lee said.