3 reasons this assisted back arch works on chronic upper back pain: 1) It actively lengthens tight pectoral muscles. 2) It mobilizes the entire thoracic spine. 💪 3) It releases deep fascial tension in the chest. Send this to someone who needs this release! . . . #wellness #thoracicmobility #cheststretch #posturecorrection #assistedstretching #fascialstretchtherapy #painrelief #upperbackpain #physicaltherapy