Let Them E'splain: The Teenage Brain

So it turns out that our brain, even though it reaches 90% of its full size by the time we are 6, undergoes a major reorganization from the time we are 12 until we reach about 25.  The purpose of which is to make it more efficient, better able to integrate our memories with cognitive thinking, and most importantly, producing a being better able to leave a safe environment and take their place in the world in which we live.