if we are the brain, why cant we control our body fully?

Question

Im wondering that if we are the brain why we cant control things like pain and our immune system.

In: Biology

Answer 1

Because the idea that we are just the brain in sole and one-way control of the body is a myth.  

The idea of the brain as a single entity under control of our conscious mind is, too. It’s a series of interrelated systems, many of them completely autonomic.

We’re still learning exactly how that very two way control works, exactly how much control over the body is exerted by the spinal cord without asking the brain first, all kinds of things.  Neurology is a young and deeply incomplete field.