What should I eat before a half marathon to ensure optimal performance and energy levels? As I prepare for an arduous journey of 13.1 miles, should I focus on carbohydrates for stamina, or is there merit in incorporating protein for muscle recovery? Are specific foods known to settle well in the stomach during such strenuous endeavors, or do individual preferences play a pivotal role in the selection process? How crucial is the timing of the meal before the race? Should I indulge in a hearty dinner the night prior, or perhaps a lighter breakfast on the day of the event? Furthermore, how do hydration and electrolyte balance interact with my pre-race nutrition choices? Considering these myriad factors, how can I tailor my dietary intake to align with my personal needs, while also adhering to conventional wisdom? What empirical evidence supports these nutritional strategies, especially at critical pre-race moments?