Caffeine can have a positive impact on endurance performance by enhancing alertness and reducing perceived exertion during exercise. It stimulates the central nervous system, leading to improved focus and quicker reaction times. Additionally, caffeine can increase the availability of fatty acids for energy during prolonged physical activities, helping to spare glycogen stores. This can delay fatigue and enhance overall performance in endurance sports. However, individual responses to caffeine vary, and excessive consumption can lead to adverse effects, so moderation is key to gaining its benefits.