What Does Specificity Mean in Sports?

In sports, there's an idea of training specificity. Specificity is the noun specific, you probably know, specific, right? This is kind of like exact. So what does this mean in sports? In sports, it means in your practice, in your training, you should train in a way that helps you for the real game. Well, this also applies to English. If you are practicing and learning English, that's close to real English used by native speakers, used in movies, used in books, then when you finally are in a real situation, you will do better. You'll perform better. On the other hand, if your learning is more like textbook learning, school learning