how to upper loosen back muscles
Shoulder Stretch. The shoulder stretch loosens the deltoids, the most prominent shoulder muscles, along with the rhomboids and trapezius muscles of your upper back. Stand upright with your feet about hip-width apart. Cross your left arm over your chest so your fingers point away from your right shoulder.
Tai chi arm rotations stretch and loosen the joints and muscles of the back and shoulder. Performing back twists, to the left and again to the right, stretches the muscles and loosens the joints of the back, shoulders and improves circulation in the upper body. To stretch the neck area, do tai chi back arches.