In addition to appealing to our children’s upstairs brain, we also want to help them exercise it. The upstairs brain is like a muscle: when it gets used, it develops, gets stronger, and performs better. And when it gets ignored, it doesn’t develop optimally, losing some of its power and ability to function. That’s what we mean by “use it or lose it.” We want to be intentional about developing the upstairs brain of our children.
