Introduction The brain is a complex organ that controls thought, memory, emotion, touch, motor skills, vision, breathing, temperature, hunger and every process that regulates our body. Together, the brain and spinal cord that extends from it make up the central nervous system, or CNS.The brain controls our thoughts, memory and speech, movement of the arms and legs, and the function of many organs within our body.The human brain attains peak processing power and memory around age 18 years. After studying how intelligence changes over time, scientists found that participants in their late teens had the highest performanceBrain health is the