Due to muscle tension, pain in the chest can really scare you. The first reaction of all those who suffer from anxiety disorder and feel a pain in the chest is that they are dying of a heart attack. That’s not true. The pain of a heart attack is very different from this pain and usually does not begin in the chest. Deep breathing and relaxation exercises are a very effective way of reducing these symptoms. If someone can massage your upper back, shoulders and chest, it will relax tired and sore muscles.