i have been working out now for about 3 months now ( coming back after not training for 9 months) anyways my right side of my back under the shoulder blade i get this numbness feeling sometimes, especialy when im sitting for a long period of time in one posture, but if. have my back against the seat the numbness goes away. its weird, it doesnt hurt but is annoying- read about it lots of people are saying its just a pinchd nerve?! sounds serious. just asking you guys if you have an idea or any experience with this problem.