Ключевые слова: addiction, alarm, alert, am, awake, bad news, bed, bedding, bedroom, call, caucasian, cell, cell phone, cellphone, digital, display, early, frustration, home, insomnia, late, male, man, message, mistake, mobile, mobile phone, morning, pajama, person, phone, room, sleep, sleeping, sleepy, smartphone, snooze, technology, telephone, thinking, time, tired, uncertain, up, use, wake, wakeup, waking, white,