Sometimes a little activity does not hurt

I was in one of my classes the other day and they were talking about how exercise helps get your brain focused more. We watched a Canadian news clip on how there was a teacher named Alison Cameron who was inspired by a book called Spark by John J. Ratey.  Alican convinced her principle to allow her to put exercise equipment into her class room, and before class each student would work out for 20 minutes. The results were phenomenal and all of her students improved in there concentration and grades