The brain controls the entire body and has five main parts: the cerebrum, cerebellum, brain stem, pituitary gland, and hypothalamus. Neurons are the basic nervous cells that form nerves and allow the brain to communicate with the rest of the body. To keep the nervous system healthy, a person should eat nutritious foods containing potassium and calcium, exercise, wear a helmet during sports, avoid drugs and alcohol, and engage their brain through activities like puzzles and reading.
