Fill in the Blank on Non-Pharmacological Comfort Measures

A 45-year-old female patient diagnosed with fibromyalgia is experiencing widespread musculoskeletal pain, fatigue, and sleep disturbances. The nurse is aware that non-pharmacological comfort measures are crucial for this patient's care. One effective non-pharmacological technique involves the application of _______ to alleviate muscle tension and promote relaxation. This technique not only addresses physical pain but also focuses on enhancing the psychological well-being of the patient.