What is the primary benefit of carbohydrate loading before an endurance event?

The primary benefit of carbohydrate loading before an endurance event is that it increases glycogen stores. This process involves consuming a higher amount of carbohydrates in the days leading up to an event, which helps athletes maximize the amount of glycogen stored in the muscles and liver. Glycogen serves as a key energy source during prolonged physical activity, particularly in endurance sports like running, cycling, and swimming. By increasing glycogen availability, athletes can maintain their performance for a longer duration, delay the onset of fatigue, and enhance their overall endurance and stamina during the event.

Other options, while they may have some relevance to athletic performance, do not specifically relate to the main objective of carbohydrate loading. Reducing body fat is not a primary focus in carbohydrate loading, as athletes are often looking to maintain or increase their energy reserves. Muscle repair is more closely associated with protein intake and recovery strategies, rather than pre-event carbohydrate management. Hydration is indeed important for performance, but it is typically addressed separately through fluid intake rather than through carbohydrate loading.