What is the proper technique for performing a teres muscle stretch to improve flexibility and reduce tension in the shoulder area?

To perform a teres muscle stretch for the shoulder area, start by standing or sitting upright. Reach one arm across your body and place the hand on the opposite shoulder. Use your other hand to gently push the elbow towards your chest until you feel a stretch in the back of your shoulder. Hold the stretch for 15-30 seconds and repeat on the other side. This can help improve flexibility and reduce tension in the shoulder area.