Here is a book that explains very well the method of learning via 10,000 repetitions that Tuhon Apolo advocates.

In the chapter “Experiencing the World” the author wrote :-Typing out a text message is not explicit or even conscious – it’s a skill that is embodied and arises from a familiarity so deep that no thought is required for the successful completion of the task.

In everyday life we have much such knowledge in our hands. It emerges from the repeated practice of a ‘skill’, a prime example of what I am calling ‘embodied knowledge’.