"When it comes to brain development, time in the classroom may be less important than time on the playground.
'The experience of play changes the connections of the neurons at the front end of your brain,' says , a researcher at the University of Lethbridge in Alberta, Canada. 'And without play experience, those neurons aren't changed,' he says."
Not just young kids, all kids! Studies indicate that the prefrontal cortex isn't fully developed until mid -20's for some. Really confirms the adage, "All work and no play makes Jack a dull boy."