If I had a dollar for every time someone asked me how many days per week they should be training their arms or legs, I would be quite well off. But rarely does anyone ask me about how many days they should practice strengthening their backs! If you look at the data behind the most common reasons why people visit the doctor it never really has to do with how weak the biceps or calves are; people overwhelmingly see the doctor because they have hurt their backs. So we have to ask why this is happening so much and how to can we fix this from occurring