Methods of study (first part)

There are many methods to study, them they depend by on the person, by its their experience, by the subject it's they're studying. Languages are among the most particular <a href="http://#" target="_blank" class="pxInta">subjects</a> of study, because to learn them it's not sufficient to have a good memory like for history, or a good <a href="http://#" target="_blank" class="pxInta">capacity</a> to reason out like for <a href="http://#" target="_blank" class="pxInta">mathematics</a>, there are several factors that influence their learning (with "their" I mean of the languages, can I write it in that way or is it too far from the main <a href="http://#" target="_blank" class="pxInta">sentence</a> to be comprehensible?), like for example the muscle memory, especially for people that are not bilingual, in our mouth's muscles there's a memory, that was built by us using for years our idiom, that's why for example we Italians have difficulty to pronunce correctly the definite English article "the", or <a href="http://#" target="_blank" class="pxInta">Chinese</a> people to pronunce correctly the letter R.