A person suffering from Thoracic Outlet Syndrome (TOS) should have various precautions, like taking care of his posture and ergonomics. There are certain postures and activities that aggravate TOS symptoms and others that reduce the symptoms. The head-forward posture aggravates TOS symptoms, which combines rounded spine and forward head with protracted shoulders, commonly referred to as “slouching”. Activities that aggravate TOS symptoms are reaching above shoulder level and carrying heavy…