Inclusion Criteria:  Subjects diagnosed with chronic neck pain More than 18 years old Loss of mobility in one or more upper cervical spine segments found through manual assessment according to Zito et al. (2006) and Kaltenborn (2012). A positive result in the Flexion rotation-test in the upper cervical spine (less than 32º or a difference of 10º or more between the two rotations. Not being able to exceed 24 mmHg in the cranio-cervical flexion test. Signing the informed consent.  Exclusion Criteria:  Contraindication to manual therapy or exercise (pathological changes due to neoplasm, inflammation infections, osteopenia, congenital collagenous compromise syndromes "Down´s, Ehlers-Danlos, Grisel, Morquio" Marked degeneration of the cervical spine that may affect cervical spine ligament integrity. History of trauma to cervical vessels. Anticoagulant therapy or blood clotting disorders or to have participated in any program of exercises or manual therapy treatments designed to improve the performance of the cervical region in the previous 3 months. Post-traumatic neck pain or red flags according to Rushton et al. Inability to maintain the supine position, use of pacemakers, an inability to perform the flexion rotation-test Language difficulties that hinder understanding of informed consent or completion of the questionnaires necessary for this study. Subjects with litigation or lawsuits pending