Did you know that the human body is made up of 70% soft tissue? Soft tissue includes tendons, ligaments, fascia, skin, fat, fibrous tissues, and synovial membranes, along with muscles, nerves, and blood vessels. Injuries to the soft tissue are common. Over 14 million outpatient visits in the U.S. each year are a result of soft tissue and skin conditions. Soft tissue injuries often occur when muscles are abnormally tense. Muscles work by tensing, contracting and then relaxing. If they do not relax completely, problems can arise, which includes: Pain Muscle weakness Misalignment of your skeletal system A restricted range of motion Soft tissue injuries can also occur due to.