The composition of a diet profoundly influences mental focus. Nutrient-rich foods, particularly those high in omega-3 fatty acids, antioxidants, and vitamins, support brain health and cognitive function. A diet rich in whole grains, fruits, vegetables, and proteins provides the necessary energy and nutrients required for optimal brain performance. Conversely, diets high in added sugars and processed foods may lead to energy crashes and impaired focus. Additionally, hydration plays a fundamental role in maintaining concentration, as even mild dehydration can negatively impact cognitive abilities.