Inclusion Criteria:  age 18-30 student of The Józef Piłsudski University of Physical Education in Warsaw written consent to participate in the study  Exclusion Criteria:  past or current injury to the trapezius. past or current injury of the cervical spine limiting mobility of this segment. broken skin at the examination site. cardiological disease and use of blood pressure medication, histamine medication and analgesics elevated body temperature, illness symptoms and a period of convalescence. a missed anti-Covid procedure before each examination. inability to find trigger points.