The Fire Element rules the firing of the brain’s neurons, the synapses, and the receptor sites. Traditional Chinese medicine (TCM) asserts that nervous system activities like thinking depend on the function of the heart. When the functions of the heart are normal, the person will have a healthy consciousness and healthy mental activities. Abnormalities, like insanity, may be brought on by insufficiency of blood. Treatment for such kinds of mental problems is determined through analysis of the Heart condition.