Who says this: If you exercise, your brain is fitter & works better?

Part 3 of the research report conducted by Dr Karen Martin, University of Western Australia: Brain boost: Sport and physical activity enhance children's learning.

A number of people have studied the correlation between exercise and the brain.  So below are journals where we can find more information about this.  I'll just refer to any studies when the need arises i.e to support informed decisions on the programmes I hope to implement next term.