The Harvard Health article "Train Your Brain" discusses the concept of brain plasticity—the brain's ability to learn and grow with age—and emphasizes the importance of engaging in new and challenging activities to maintain and enhance cognitive functions. Activities such as learning a musical instrument, acquiring a new language, or participating in creative arts can improve memory recall, problem-solving skills, concentration, and attention to detail. The article suggests selecting a new activity, enrolling in classes for structured learning, and dedicating consistent practice time to stimulate the brain effectively. Engaging in mentally stimulating activities is significant for brain health and cognitive performance, as it helps build cognitive reserve and may delay age-related cognitive decline. The article recommends choosing activities that are challenging, complex, and require regular practice to maximize brain training benefits. Given Harvard Health's reputable standing and the evidence supporting lifelong learning for cognitive health, these recommendations are credible and practical for individuals seeking to enhance brain function.