Brain health refers to the overall well-being and proper functioning of the brain. It involves maintaining cognitive abilities such as memory, attention, and problem-solving skills. Factors that contribute to brain health include a balanced diet, regular physical activity, mental stimulation, and adequate sleep. Protecting brain health is essential for reducing the risk of cognitive decline and diseases like Alzheimer's disease. Engaging in social activities, managing stress, and avoiding harmful substances also play a crucial role. By prioritizing these aspects, individuals can support their brain's longevity and performance throughout life.