In the realm of education and training, one of the biggest challenges trainers face is ensuring that the knowledge and skills imparted during a training session are retained over time. Enter the forgetting curve, a concept introduced by the German psychologist Hermann Ebbinghaus in the late 19th century. The Forgetting Curve illustrates the decline of memory retention over time, highlighting the importance of reinforcement and spaced repetition in the learning process. In this article, we will explore the forgetting curve, its implications for training, and strategies trainers can employ to mitigate its effects.