“Why do I have to keep practicing? I know it already!”
Science has a persuasive retort: We don’t just need to learn a task in order to perform it well; we need to overlearn it.
Whenever we learn to make a new movement, we form and then update an internal model which our nervous system uses to predict our muscles’ motions. As that internal model is refined over time, we’re able to cut down on unnecessary movements and eliminate wasted energy.
Hope it encourages you to practice more!