Classroom teachers would do well to incorporate a few minutes of meditation after recess and/or in lieu of recess.
It is a learned art, and teaches a crucial life-skill...discipline, which many youngsters have trouble with. I do believe video games amp up the 'hyper and/or aggressive energy in some kids.
If I were interested in a doctorate, this would be a good thesis; but, I'm sure it's been done and done again...lol...
Best regards.
Peace.