Caffeines impact on long-distance performance seems to be a widely accepted concept, but what about the potential drawbacks of relying on caffeine for endurance events? Does the common strategy of consuming caffeine in the final stages of a long-distance event actually mask fatigue, rather than alleviating it? Are athletes potentially pushing themselves too hard with caffeine, only to crash or experience severe fatigue after the event? Furthermore, how does caffeines effect on the bodys perceived exertion rate influence pacing and decision-making during long-distance events? Can caffeines influence on perceived exertion lead athletes to misjudge their actual energy levels and make costly mistakes?