This exercise stretches the upper back and rhomboid muscles as well as to increase mobility in the shoulder blades & upper back. Begin by engaging your inner core stability below your belly button. Then keeping the head up and chin slightly tucked, clasp your fingers together and reach forward and slight down arching the upper back. Hold for 30 secs, repeat 3 sets 3-4 times daily. This stretch is great to do if you are sitting down on your computer working all day, standing or doing a lot of repetitive lifting where your shoulders, upper back and neck are tight, stiff and sore.