I think its a poor way of saying that if you have rather bad posture and work out to build muscle etc, with that bad posture your not necessarily fixing your po

I think its a poor way of saying that if you have rather bad posture and work out to build muscle etc, with that bad posture your not necessarily fixing your posture, and may just make it harder to fix in the long run as your muscles build and develop with the bad posture/habits. However I don't know how accurate or correct that may be.