Muscle memory involves your muscles adapting to certain movements that may feel foreign at first. With enough repetition, these movements become second nature and can be performed effortlessly during a game.
Professional soccer players such as Leo Messi and Cristiano Ronaldo are effective largely because of their ability to turn on a dime and change direction quickly. They are praised for their natural talent and ability, but their performances on the field are often a product of their hard work during training.
Soccer players make great use of short, quick movements with their feet. Therefore, speed and agility are invaluable to a soccer player's set of skills. Working on these soccer skills using a variety of drills will lead to an overall improvement in your game.