Inclusion Criteria:  Age between 18 - 65 years, Giving informed consent for examination, ultrasonographic evaluation and study participation  Exclusion Criteria:  Having a chronic neck pain for more than 6 months, Having any neurological or musculoskeletal conditions that may affect the anatomy of cervical region (cervical disc herniation, torticollis, severe scoliosis, vertebral malformation, spinal stenosis, myopathies, etc.) Having a history of surgery or radiation therapy in the cervical region