<s>[INST] Hi not sure if you can about 2 weeks ago i developed a very painful right shoulder i could not sleep for about 1 week even with trying sleeping tablets. I go to gym 4 times a week and only started back middle of this week only doing spin classes but afterwards my arm feels like it has gone dead. [/INST] Hi,Sharp shoulder pain secondary to gym or spin classes indicates injury to rotator cuff. Take mild pain killers, muscle relaxants and hot fomentation. If you don't get relief in about 10 days then go for MRI shoulder and consult an orthopedic surgeon. Hope I have answered your query. Let me know if I can assist you further. Regards,Dr. Gopal Goel </s>