The goal of this clinical trial is to measure the effects of osteopathic manipulative treatment (OMT) on tissues of the craniocervico-mandibular unit (CCMU) in individuals with neck pain and headaches. The main questions to answer are: 1. How does OMT affect CCMU muscle stiffness 2. How does OMT affect jaw motion 3. How does OMT affect autonomic function 4. Is pain pressure threshold affected by OMT of the CCMU Participants will undergo the following interventions: 1. Photos taken to measure head and neck angles 2. Ultrasound 3. Smooth Pursuit Neck Torsion Test 4. Motion Capture 5. Autonomic Protocol 6. Algometry 7. Surveys