A balanced diet contributes significantly to better cognitive performance in UPSC aspirants by supplying essential nutrients that boost brain function. Proper nutrition enhances memory, concentration, and overall mental clarity, vital for intensive study sessions. Foods rich in omega-3 fatty acids, antioxidants, and vitamins can improve focus and reduce fatigue. Staying hydrated and maintaining regular meal patterns also plays a crucial role in sustaining energy levels and fostering a conducive learning environment during preparation.