I'll admit to not reading the entire article here but I think that mostly people mistake posture issues for lack of exercise / being sedentary in general.
If you work out a minimal amount and build some core strength / back muscles etc then you'll find that your posture naturally corrects itself whilst walking, that sitting in a chair for extended periods isn't as rough, etc.
If you work out a minimal amount and build some core strength / back muscles etc then you'll find that your posture naturally corrects itself whilst walking, that sitting in a chair for extended periods isn't as rough, etc.