A multivitamin can benefit physically active individuals by helping fill nutritional gaps in their diets. Active lifestyles increase demands for various vitamins and minerals, such as vitamin D, B vitamins, and magnesium, which play critical roles in energy metabolism and muscle recovery. A multivitamin may enhance overall health, supporting immune function and reducing the risk of nutrient deficiencies that could hinder performance. While they shouldn't replace whole foods, multivitamins can serve as a valuable supplement for those who find it challenging to meet their nutritional needs through diet alone, ensuring optimal physical performance.