In this weeks video blog, Dr. Barnard Shows up how easy it is to stretch your pec muscles at the comfort of your own home or work. May people have whats called upper cross syndrome. When the pec muscles are too tight it pulls your shoulders forward and gives you that rounded shoulder look. This can cause problems for your entire spine. This is not a normal posture and this posture leads to hunch back look. Take a moment to watch this video and see how easy it is to work on your posture.