A number of people have used the term 'muscle memory' when commenting on marksmanship in general. It seems that the statement 'you have to develop muscle memory' is used today almost as much as 'your breathing is wrong', as reason for poor marksmanship performance.
I have used various scientific search engines to find documented and quantified research involving 'muscle memory' and came up with nothing.
So, for the first is what will probably be a couple of individual threads, let me ask the following question.
What is 'muscle memory' and how does your muscle know if it is memorizing the right thing?