The nervous system has two distinct parts: the central nervous system comprises the brain and spinal cord and the peripheral nervous system is the network of nerves that connects the brain and spinal cord to the rest of the body. The brain coordinates the ability to move, touch, smell, hear and see.

The B vitamins are known as "brain" vitamins, and supplements such as choline, phosphatidylserline, and ginkgo biloba are known to help memory. Herbs such as chamomile, passionflower, and valerian help us maintain a balanced demeanor.