Ключевые слова: apnea, awake, awaken, concept, conceptual, concerns, dark, darkness, depressed, depression, depressive, disorder, distraught, disturbed, exhausted, exhaustion, eyes, fatigue, hands, health, illness, insomnia, looking, male, man, night, nightmare, one, open, opened, people, person, problem, problems, sick, sickness, sleep, sleepless, staring, stress, stressed, tired, troubled, vigil, worried, worries,