Lay on your back on a foam roller. Put your arms out in a T. Open up your chest and just relax and stretch for about a minute.
Then continue with a T, a Y, and an I. Open to a T and bring arms up and together for 10 reps.
Then bring arms out to a Y and together for 10 reps.
And finally bring arms into an I position and together for 10 reps.
Do 3 sets. I found this really helps relieve the stress in my upper back post workout. Simple and easy to do yet effective! Let me know if this helps!!