Great infographic on the importance of exercise on the brain. In short, exercise:

• has a positive effect on the brain
• increases the development of new blood vessels in the brain
• reduces memory decline
• (twice-weekly) increases the size of your hippocampus

So why is the default position in many classrooms for learning to be seated and sedentary? Why is it that primary-aged children sit on average for 9 hours a day?

Jog Your Memory: The Effects of Exercise on the Brain | Michael Hyatt.