A physical therapist once told me that you need to to sit and stand as if a string is connected to the middle of your sternum and being pulled skywards. Appare

A physical therapist once told me that you need to to sit and stand as if a string is connected to the middle of your sternum and being pulled skywards. Apparently this is what they teach in Ballet schools. For me it worked well and my back pain, over a 4 week period vanished.