such as correcting bad posture due to upper crossed syndrome, do you design a program that focuses on exercises that strictly work the back and shoulders, or do you just give them a full body workout instead? Same question with a client with specific goal in mind, such as tightening up glutes and thighs, do you give them a workout that consists of just exercises for the glutes and thighs, or do you give them a full body workout and just include 1 or 2 exercises that focus on glutes and thighs?
I think most clients have goals in mind, it depends on how much time, money and effort they wish to be successful
As a trainer you need to implement and design a program based on your clients needs, the result of the assessment, and their abilities.
If the client with upper crossed syndrome (I don’t know what that is) will benefit from back strengthening exercises this may be all they need, however, sometimes getting clients to become more active in general also has it’s benefits.
I think the bigger picture is accommodating your clients but also educating and encouraging them to look at their bodies as one whole unit, not divisions.