Literature search
This narrative review was conducted by a focused PubMed, Scopus, and Web
of Science hand search of the English language literature up to November
2020. We included articles referring to the nonpharmacologic treatment
of insomnia. The following eligibility criteria were determined in
advance. We considered original research, narrative and systematic
review articles. Editorials, letters to the editor, and case
series/reports were excluded. Terms and keywords used included the
following: insomnia, sleep, cognitive-behavioral therapy, sleep hygiene,
stimulus control, autogenic training, herbal medicine, phytotherapy,
light therapy, acupuncture, acupressure, progressive muscle relaxation,
hypnotherapy, exercise, yoga, Tai Chi, music therapy, mindfulness,
depression, sleep restriction, aromatherapy, and massage. The
bibliographies of relevant articles were searched for additional
references.