Inclusion Criteria:  between the ages of 18-45, who do not have any chronic diseases and who do not have to use any medication regularly will be included in all three groups.  Exclusion Criteria:  Due to the superficial EMG measurement method we used, those who have orthopedic problems in the upper extremity (shoulder, elbow, wrist and fingers) or have a history of surgical operation in the upper extremity, however, any systemic disease such as diabetes, gout, chronic kidney failure, rheumatoid arthritis, thyroid diseases individuals will be excluded from the study in all three groups.