The brain, its something that so many of us will benefit from greatly enough to the point where we become healthier on a level many of us never knew existed due to the stigma around it.
Mental health is really a bigger subject than many may think. There's so many different areas with every section and part in the brain that contributes to our own individual abilities to smell, hear, touch, react, think, respond, feel and much more including other areas around mental illness and others in the psychology department of the subject.