Examining the Effects of Fatigue According to Nomophobia Level

Inclusion Criteria: * Being between 18-25 years of age. * Agreeing to participate in the study voluntarily and signing the Informed Consent Form. * Being literate in Turkish. * Being able to complete the Nomophobia and PAS scales. Exclusion Criteria: * Having undergone musculoskeletal surgery within the last 6 months. * Having any chronic neurological or orthopedic condition that would prevent participation in the experimental protocol (e.g., herniated disc, fibromyalgia, cervical disc herniation, etc.). * Taking medications that may affect muscle tone or pain perception continuously (e.g., antidepressants, antispasmodics, muscle relaxants). * Having a diagnosed serious psychiatric disorder (clinical depression, bipolar disorder, etc.). * Having a cardiovascular or respiratory disease that would prevent maximum physical exertion during the protocol.