“…First, the time young people spend on SM may actually encroach on the time that is available to sleep, this is the time displacement hypothesis (Cain & Gradisar, 2010). Second, SM use is known to increase arousal (Cain & Gradisar, 2010;Mauri, Cipresso, Balgera, Villamira, & Riva, 2011). For example, Mauri and colleagues (2011) found that during Facebook use participants showed high physiological arousal.…”