#DeadArm #ArmNumbness If you have an increase in numbness/tingling/burning/pain down the arm when your arms are overhead or while while sleeping on your side, there is a good chance that the scalene muscles in the side of the neck are tight due to poor posture and lack of shoulder blade strength/control. This “diagnosis” for this issue commonly referred to as TOS #ThoracicOutletSyndrome. The scalene muscles deep in the neck can become tight from having a rounded upper back, rounded shoulders, an