Exam time is certainly stressful! Do take a few moments to stretch out your shoulders and back--your body will love you for it. To help you out, the Mayo Clinic web site offers a video demonstrating a few shoulder and upper back stretches.
Once you have a little more time, perhaps you can treat yourself to a yoga class and learn my favorite pose-- Marjariasana (cat pose).
Good luck on your exams!
Ernster, the Virtual Library Cat
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