There is one large brain inside your skull and a small brain inside your heart. Apparently the mini brain inside your heart has about 40,000 neurons.
They think the purpose of the brain in your heart is to fine tune the muscle movements to smooth out the flow of blood in your circulation system. You could say it is like a micro processor that improves the performance of a machine.
Your heart actually thinks its own unique way. We don't fully understand what the heart brain is doing. Your heart has a tiny brain inside it that adjusts the forces of individual muscle fibres.
